Astrology dictionary

The strength of a planet derived from its house position, its speed or its aspects.

Unlike essential dignity (linked to the sign), accidental dignity depends on the circumstances of the moment. A planet in an angular house (I, IV, VII, X), a fast-moving planet, or a planet in Cazimi receives accidental dignity. This means it has the concrete means to act in the material world. A planet can be weak by sign (in detriment) but strong accidentally (culminating), which indicates an ability to overcome its handicaps through action.

A planet that is badly aspected or placed in a position of weakness.

A planet is said to be “afflicted” when it receives tense aspects (square, opposition) from malefic planets, or when it stands in detriment or fall. Affliction is not a punishment but rather the sign of a psychological function that meets obstacles and that requires particular conscious effort to be integrated in a positive way.

A conscious orientation towards a goal or aspiration in the natal chart.

The aim is the direction one chooses to give to one's life based on the indications of the natal chart. It involves becoming aware of the talents, challenges and aspirations revealed by the planets, houses and aspects. The aim is not determined by the chart, but draws on it to orient life choices towards a more authentic and fulfilling realisation. It is a key concept for moving from a descriptive reading of the chart to a more dynamic and proactive approach to astrology.

One of the four elements: communication, intellect, exchange and abstraction.

The element of Air encompasses the signs of Gemini, Libra and Aquarius. It represents the world of ideas, communication, social relationships and abstract thought. Natives marked by Air need to exchange, to understand, to connect concepts with one another. They excel in language, diplomacy and networking. Air is the breath that carries ideas from one mind to another — without it, the elements remain isolated. Its quality is hot and moist. In excess, Air can produce instability, superficiality or an excessive intellectualization of the emotions. A chart lacking Air may signal difficulty in stepping back, in communicating one's ideas or in forming light social bonds. In classical astrology, the three Air signs form the trine of the intellect.

The planet that, through its dignities over the Hyleg, determines the symbolic length of life.

The Alchocoden (from the Arabic “al-kadkhudah,” the master of the house) is the technical partner of the Hyleg. While the Hyleg designates the vital point, the Alchocoden is the planet that holds the most dignities (rulership, exaltation, etc.) over that point. In ancient astrology, it was used to calculate longevity: according to its strength and its aspects, it “granted” a certain number of years (lesser, middle or greater periods). It is the true “steward” of vital energy, showing how the individual manages his health capital over the long term.

The most powerful planet of a chart or of a specific point, based on the calculation of dignities.

The Almuten (from the Arabic 'al-mutaizz', the winner) is the planet that accumulates the most dignity points (domicile, exaltation, triplicity, term, decan) over a given degree. One can calculate the Almuten of a house, of a planet, or of the entire chart (the Almuten Figuris). It is an indicator of real strength that can sometimes supersede the simple ruler of the Ascendant in analyzing an individual's capacity for action.

The destructive planet or point in a natal chart.

The Anareta is the point opposed to the Hyleg (the giver of life). In the ancient techniques for calculating longevity, the Anareta represents the force that “cuts” the thread of life. It is often the malefic planet (Mars or Saturn) that forms the most dangerous aspect to the Hyleg. Today, this concept is used in a more symbolic way to designate vital challenges or crises of profound transformation.

A blend of masculine and feminine energies within a chart, indicating a balanced or fluid personality.

Androgyny in astrology manifests through a balanced distribution or a mixed dominance of masculine signs and planets (Fire, Air) and feminine ones (Earth, Water). An androgynous chart can indicate a personality that harmoniously integrates the qualities of action and reflection, introversion and extroversion, logic and emotion. This can translate into great adaptability, an ability to understand different perspectives and a nuanced approach to life.

The planet or point of disintegration in a natal chart.

The Antareta is the point opposed to the Almuten Figuris (the most powerful planet of the chart). It is the force that opposes the maximum expression of the personality. It can indicate the zones of weakness, the blockages or the major trials that the individual must face in order to evolve. Like the Anareta, the Antareta is often associated with malefic planets, but it can also concern any planet depending on the configuration of the chart.

Points of symmetrical reflection relative to the solstitial axis (Cancer/Capricorn).

The antiscion of a planet is its “shadow” or its mirror point. Two planets related by antiscion share a hidden affinity, even without a visible aspect. It is a subtle technique of Hellenistic and medieval astrology.

The moment when a planet approaches the exact aspect with another.

Application occurs when a faster planet moves toward the exact degree of an aspect with a slower planet. In astrology, an applying aspect is considered far more powerful and active than a separating one, because the energy is in a phase of growth and the event or character trait is still in the making. It is a fundamental criterion in horary astrology for determining whether an action will come to pass.

A universal symbolic model present in the collective unconscious.

A concept popularized by Carl Jung, the archetype is the basic structure that gives shape to astrological symbols. The planets are archetypes of psychological functions (the Warrior for Mars, the Sage for Jupiter). Astrology is the study of the geometry of these archetypes and of the way they interact to form a unique personality.

The zodiac sign rising on the horizon at the exact moment of birth.

The Ascendant (abbreviated AC or ASC) is one of the most important points of the natal chart. It represents the cusp of the first house and defines the way a person presents to the world, their physical appearance, their spontaneous reflexes and the first impression they give to others. Unlike the Sun sign — which describes the deep identity — the Ascendant is the social mask, the gateway to the personality. It shifts by about one degree every four minutes, which makes a precise birth time indispensable in order to calculate it correctly. A native may have the Sun in Aries and an Ascendant in Pisces: inwardly they will be driven and combative, yet they will appear gentle, dreamy and elusive at first glance. The Ascendant also colors the interpretation of all the houses of the chart, since it determines their distribution among the signs.

A practitioner who interprets celestial positions in order to advise or analyze.

The astrologer combines technical skills (calculation and basic astronomy) with faculties of synthesis and empathy. Their role is to decode the symbolic language of the sky in order to make it understandable and useful to the consultant. They must observe a strict ethic, avoiding absolute determinism and preserving free will.

The principle of power and structure, mainly associated with Saturn and the Midheaven.

Authority in a chart indicates how the individual positions themselves in relation to the law, to hierarchies and to their own capacity for command. It is governed by Saturn (authority through structure and time) and the Sun (authority through personal radiance). The tenth house rules the public expression of this authority.

A line connecting two opposite points of the chart, creating a field of complementary tension.

A chart is structured by major axes: the horizontal axis (Ascendant–Descendant / Self–Other) and the vertical axis (Midheaven–Imum Coeli / public life–private life). Interpretation by axis makes it possible to understand that two opposite houses function as the two faces of the same coin.

Traditionally, planets (Venus, Jupiter) or aspects that bring luck and ease.

In traditional astrology, Venus is the lesser benefic and Jupiter the greater benefic. By extension, the trine and the sextile are benefic aspects. Modern astrology qualifies this term by pointing out that too much ease can lead to laziness or to an absence of growth.

A chart cast for the exact moment and place of an individual's birth.

The birth chart, or natal chart, is a photograph of the sky at the precise moment of birth, seen from the place of birth. It is the founding document of any individual astrological study. The birth chart includes: the position of the ten planets in the signs and houses, the aspects (angles) between the planets, the Ascendant, the Midheaven, and possibly fictitious points (lunar nodes, Lilith, Arabic parts). To calculate it, three pieces of data are essential: the date, the exact time and the place of birth. The birth chart never changes — it represents the native's basic potential. It is then through transits, progressions and solar returns that the astrologer observes how this potential unfolds over time.

The word comes from the Arabic “kashmimi.” The state of a planet within 17 arc minutes of the Sun, granting it exceptional power.

A ‘Cazimi’ planet is considered to be ‘in the heart of the Sun,’ which grants it an extremely powerful and beneficial energy. It is a rare and highly favorable position, for the planet is protected by the solar light and can express its potential to the fullest. For example, Mercury Cazimi is an indicator of great mental clarity and success in communication.

An assessment of the intrinsic strengths and weaknesses of a planet within its sign.

The celestial state determines the moral quality and the power of a planet even before analyzing its concrete action (terrestrial state). It is calculated by adding up its dignities and subtracting its debilities. A planet with an excellent celestial state will produce beneficial results, even in a difficult house.

A planet weakened by its closeness to the Sun (between 17’ and 8°30’).

When a planet is “burnt” by the Sun, its own characteristics are obscured or consumed by the solar power. The individual may struggle to express that function objectively. It is a major accidental debility in traditional astrology. Only the point of Cazimi (the heart of the Sun) cancels this negative effect.

The state of a planet located too close to the Sun (generally less than 8°30’).

A ‘combust’ planet is considered weakened because it is symbolically burnt by the Sun’s rays, making its expression invisible or subject to the solar will. In ancient astrology, this is a serious debility. However, if the planet is within 17 arc minutes of the Sun, it is said to be ‘Cazimi’ (in the heart of the Sun) and instead becomes extremely powerful.

A point of symmetrical reflection across the axis of the equinoxes (Aries/Libra).

The contra-antiscion is the point opposite the antiscion. While the antiscion is calculated with respect to the axis of the solstices (Cancer/Capricorn), the contra-antiscion uses the 0° Aries – 0° Libra axis. In interpretation, a planet in contra-antiscion with another often indicates a challenge or a hidden opposition. It is a shadow relationship similar in nature to the opposition, but one that works in a more subtle, almost unconscious way, within the psychic or eventful structure of the chart.

A planet located at the highest point of the chart, near the Midheaven.

The culminating planet is one of the most powerful indicators of vocation and public visibility. It “colors” the whole chart with its energy, for it is the most visible body at the moment of birth. It often indicates the nature of social success and the way the individual is perceived by the community.

The periodic return of a body to a given position, or the relationship between two bodies.

Astrology is a science of cycles. We distinguish the individual cycle (a planet’s revolution back to its natal position, e.g. the Saturn return at age 29) from the synodic cycle (the meeting of two planets, e.g. the Jupiter-Saturn cycle). Each cycle has a phase of seeding (conjunction), of crisis (square), of flowering (opposition) and of reckoning.

The weakening of a planet’s strength according to its position by sign or by house.

Debility may be essential (the planet is in detriment or fall, which alters its nature) or accidental (poor placement by house, combustion by the Sun, difficult aspects). A planet in debility does not signify a lack of talent, but a difficulty in expressing its qualities fluidly or in line with social expectations.

The division of a sign into three sections of 10°, each colored by a different planet.

Each sign of the zodiac spans 30° of the ecliptic and divides into three decans of 10° each. This subdivision allows for finer interpretation: an Aries of the first decan (0°-10°) does not have exactly the same tone as an Aries of the third decan (20°-30°). Each decan is associated with a planetary sub-ruler that colors the sign with an additional energy. Several systems of decan rulership coexist: the Chaldean system (the oldest), the triplicity system and other variants. In practice, decans are used to refine forecasts (notably in horoscopes), but also to better understand the differences between natives of the same sign. The fixed stars are also distributed by decan, adding a further layer of interpretation.

Extreme weakening of a planet, beyond debility.

Degeneration is a more extreme concept than debility. It occurs when the conditions are so unfavorable that a planet loses almost all its ability to express its qualities constructively. For example, a planet in fall in a house of misfortune (the VIIIth or XIIth House) and in a difficult aspect with malefic planets may be considered degenerate. This can indicate deep blockages, major challenges or self-destructive tendencies linked to the energy of that planet.

The unit of measure for a planet’s position on the 360° zodiacal circle.

The zodiacal circle divides into 360 degrees, that is 30° per sign. A planet’s position is always expressed in degrees, minutes and arc seconds within a sign (for example: Venus at 15°27’ of Taurus). The exact degree is crucial for calculating aspects (angles between planets), house cusps and the Ascendant. Some astrologers attribute a specific meaning to each degree of the zodiac: the Sabian degrees (imagined by Marc Edmund Jones and Dane Rudhyar) are the best known. A critical degree (0°, 13°, 26° of the cardinal signs, for example) is considered a point of particular strength. The precision of the degree explains why the time of birth is so important in astrology: a difference of a few minutes can change the Ascendant and shift all the house cusps.

A state of deep distress, often linked to difficult astrological configurations.

Depression is a complex psychological state that may be influenced by astrological factors such as planets in fall, difficult aspects (squares, oppositions) involving the Moon, Saturn or Pluto, or configurations such as T-Squares. However, it is crucial to stress that astrology must never be used to diagnose or treat mental disorders. It can offer a symbolic understanding of emotional challenges, but anyone suffering from depression should consult a mental health professional.

The point opposite the Ascendant (House VII), governing relationships with others and partnerships.

The Descendant (DS) marks the start of House VII. It represents the Other, the partner (romantic or professional), but also ‘declared enemies.’ In psychological astrology, it often describes the qualities we do not recognize in ourselves and project onto others. It is through the Descendant that the individual completes their personality through exchange. If the Ascendant is the ‘Self,’ the Descendant is the ‘You.’ Studying the sign on the Descendant and its ruler gives crucial clues about the type of partner one is drawn to and the way one experiences contractual commitment.

The sign opposite a planet’s domicile, where its energy is constrained and uncomfortable.

Detriment (or exile) is the most uncomfortable position for a planet: it is found in the sign opposite the one it rules. Mars in Libra (opposite Aries), Venus in Scorpio (opposite Taurus), the Sun in Aquarius (opposite Leo). The planet in detriment must work with values that are not its own: Mars in Libra must negotiate instead of charging ahead, Venus in Scorpio loves with an intensity that overflows the usual Venusian framework. Detriment is not a condemnation: it simply indicates that the expression of this energy requires an extra effort, an adaptation. Many remarkable personalities have planets in detriment in their charts — precisely because the difficulty drove them to develop original compensatory qualities. Detriment invites one to find a creative and personal expression rather than a conventional one.

The state of a planet located in the sign opposite its domicile.

A planet in detriment is “away from home.” Its natural qualities are hampered by a sign whose energy is foreign to it (e.g. Mars in Libra). This requires of the individual a constant adaptation and an effort of awareness to express the planetary function without frustration.

The strength of a planet according to the sign it occupies: domicile, exaltation, detriment or fall.

In traditional astrology, the dignity of a planet denotes its strength or weakness according to the sign in which it is found. There are four main levels. Domicile is the sign the planet rules: Mars in Aries, Venus in Taurus — the planet is at home there, at ease, fully effective. Exaltation is a sign where the planet expresses its qualities in an amplified way: the Sun is exalted in Aries, the Moon in Taurus. Detriment (or exile) is the sign opposite the domicile: the planet is on foreign ground there, constrained, ill at ease. Fall is the sign opposite the exaltation: the planet is weakened there. These dignities are not verdicts: a planet in detriment can express itself brilliantly if it receives good aspects. But knowing the dignities allows one to gauge the natural ‘energetic quality’ of a planet in a chart.

The normal motion of a planet advancing in the order of the signs of the zodiac.

A planet is said to be ‘direct’ when it follows its natural course from West to East along the ecliptic. This is the standard state in which planetary energy expresses itself spontaneously, fluidly and oriented toward the future. The majority of planets in a natal chart are generally direct.

The date of a planet’s discovery, influencing its astrological interpretation.

The date of a planet’s discovery is an important element in astrology. It marks the moment when humanity became aware of this cosmic influence. For example, Uranus was discovered in 1781, Neptune in 1846 and Pluto in 1930. These dates often correspond to major social changes: the industrial era for Uranus, the era of psychology for Neptune, and the upheavals of the 20th century for Pluto. In modern astrology, the more recently discovered planets (Uranus, Neptune, Pluto) are held to have a more collective or generational influence than the classical planets (Mercury, Venus, Mars).

The planet that rules the sign in which another body is found.

The dispositor is the “boss” of another planet. For example, if your Moon is in Aries, Mars (ruler of Aries) is the dispositor of your Moon. This means that the way you express your emotions depends on the state of your Mars. This notion is crucial for the synthesis of a chart, for it allows one to create chains of disposition between the planets, sometimes leading to a final ‘Master of reception.’

The quality attributed to aspects that generate tension: square, opposition, sesquiquadrate.

Dissonance, in astrology, denotes the nature of the aspects that create friction between two planetary energies. The main dissonant aspects are the square (90°), the opposition (180°), the semi-square (45°) and the sesquiquadrate (135°). The term “dissonant” has replaced the old qualifiers of “bad” or “malefic,” for modern astrology holds that tension is as necessary as harmony. A dissonance forces the native to work, to overcome a challenge, to integrate two contradictory forces. It is friction that produces light. An entirely harmonious chart (trines, sextiles) can lack drive; a chart rich in dissonances often confers an intense, resilient and combative personality. The key lies in the balance between harmony and dissonance.

That which belongs to the day or expresses itself in the light.

In traditional astrology, the notion of ‘Sect’ is used: a chart is diurnal if the Sun is above the horizon. This changes the hierarchy of the planets (the Sun becomes the dominant luminary). The diurnal (Masculine) signs are inclined toward externalization and direct action.

The zodiacal sign where a planet possesses its greatest strength and affinity.

A planet is said to be in ‘Domicile’ when it is in the sign it rules (e.g. Mars in Aries, Moon in Cancer). In this position, the planet is in full possession of its means; it can act freely and express its nature in an authentic and powerful way. Traditional astrology distinguishes the diurnal domicile from the nocturnal domicile. It is the most important of the essential dignities.

The element associated with the signs Taurus, Virgo and Capricorn, symbolising matter and the concrete.

Earth is one of the four classical elements in astrology, associated with the signs Taurus, Virgo and Capricorn. It represents the material world, stability, practical sense, perseverance and grounding in reality. The Earth signs favour the concrete, security, and slow, lasting construction. They are reliable, patient and methodical, but can also prove rigid, possessive or excessively cautious. Taurus embodies fixed Earth (resources, sensuality); Virgo, mutable Earth (analysis, service); Capricorn, cardinal Earth (ambition, structure). A chart rich in Earth indicates a realistic, efficient native with good material sense. A lack of Earth may translate into difficulty bringing projects to fruition or handling the practical aspects of life.

Tables giving the exact positions of the planets for each day of the year.

The ephemeris is a set of astronomical tables that give the position of each planet in degrees, minutes and seconds for each day at a given hour (generally 0h or 12h UT). It is the basic tool of every astrologer: without an ephemeris, it is impossible to cast a natal chart or to calculate transits. Before the computer age, astrologers used printed ephemerides, often published across several decades (Raphael’s Ephemeris or Die Deutsche Ephemeriden were the most renowned). Today, astrology software integrates the ephemeris directly, but paper versions are still used by many practitioners who prefer the rigor of manual calculation. The ephemeris also includes retrogradations, sign changes and the phases of the Moon.

The sign in which a planet expresses its qualities in an amplified and brilliant way.

Exaltation is one of the four essential dignities in traditional astrology. A planet in exaltation is in a sign where it can express itself with brilliance, sometimes even with excess — like a guest of honor at a feast held in their honor. The classical exaltations are: the Sun in Aries, the Moon in Taurus, Mercury in Virgo, Venus in Pisces, Mars in Capricorn, Jupiter in Cancer and Saturn in Libra. An exalted planet is powerful but may lack temperance: Venus in Pisces loves with devotion, but can sink into amorous self-sacrifice. Exaltation must be distinguished from domicile: in domicile, the planet is at home and masters its territory; in exaltation, it shines but does not rule. The sign opposite the exaltation is the fall, where the planet is weakened.

The state of weakness of a planet located in the sign opposite its place of exaltation.

Fall is one of the two principal essential debilities, along with detriment. When a planet is in fall (for example, the Moon in Scorpio, since it is exalted in Taurus), its qualities express themselves with difficulty, in a roundabout or weakened way. The planet loses its splendor and its natural efficiency. In interpretation, this often suggests an area where the individual must show greater effort or awareness to make up for an original lack of fluency.

A receptive, introverted and magnetic energy polarity.

The so-called 'Feminine' signs (also Nocturnal or Negative) comprise the Earth signs (Taurus, Virgo, Capricorn) and the Water signs (Cancer, Scorpio, Pisces). This polarity points to an inward-turned energy that favours reflection, sensation, conservation and receptivity. These signs respond to their surroundings and prize assimilation over raw action. A predominance of feminine signs in a chart often brings depth, patience and a keen sensitivity to atmosphere.

One of the four elements: energy, enthusiasm, will and creative impulsiveness.

The element of Fire gathers the signs of Aries, Leo and Sagittarius. It represents vital energy, enthusiasm, the will to act and personal radiance. Natives dominated by Fire are spontaneous, courageous, passionate and oriented toward the future. Fire is hot and dry by nature. It lights, warms and transforms, but it can also burn if left unchannelled. In excess, Fire produces impetuousness, impatience, self-centredness or anger. A chart devoid of Fire may lack self-confidence, initiative or spontaneous joy in living. Fire is the first spark, the Big Bang of the personality — without it, nothing gets started. In classical astrology, the three Fire signs form the trine of energy and creativity.

One of the three qualities: stability, perseverance, resistance to change.

The fixed signs are Taurus, Leo, Scorpio and Aquarius. They occupy the heart of each season and embody stability, determination and continuity. Where the cardinal signs initiate and the mutable signs adapt, the fixed signs maintain and consolidate. A native strongly marked by the fixed quality is tenacious, reliable, enduring, sometimes stubborn. They cannot bear to be rushed and prefer to advance at their own pace. Their strength lies in constancy; their weakness in rigidity. The fixed signs are renowned for their ability to withstand outside pressure — but also for their difficulty in letting go when change becomes necessary. A Grand Cross in fixed signs, for instance, is one of the most powerful (and most dreaded) configurations of the natal chart: it confers an iron will but also a tendency toward emotional blockages.

Nearly motionless stellar points that add a specific coloring to the degrees of the zodiac.

The fixed stars are the visible stars of the night sky, as opposed to the planets (“wandering stars” in Greek). Although they move very slowly (about 1° every 72 years owing to the precession of the equinoxes), they are considered fixed on the scale of a human life. Traditional astrology gives great importance to certain stars of the first magnitude. Algol (26° Taurus), considered the most violent, is associated with extreme perils. Regulus (0° Virgo, formerly in Leo) confers success and radiance — but with a risk of downfall if pride dominates. Spica (24° Libra) is one of the most beneficial, bringing artistic talent and protection. When a natal planet is in close conjunction (orb of 1° to 2°) with a major fixed star, the interpretation of the chart is considerably enriched.

A configuration formed by four planets linked by four squares and two oppositions.

The Grand Cross (or Cosmic Cross) is one of the harshest and most powerful figures in a chart. It locks the individual into a permanent challenge that touches every sector of their life (if the planets are angular). This configuration compels ceaseless action and an iron structuring of the self. It is very common among great builders or among people with an extraordinary destiny marked by struggle.

A figure formed by three planets linked by trines within the same element.

The Grand Trine forms a perfect equilateral triangle in the zodiac. It indicates a fluid circulation of energy, innate talents and great ease within the element concerned (Fire, Earth, Air or Water). Although perceived as highly beneficial, it carries a trap: inertia. With the energy flowing in a closed circuit without resistance, the individual may lack the motivation to push themselves or to face concrete challenges, settling instead for their natural facility.

An astronomical model placing the Sun at the centre of the solar system, revolutionary for astrology.

Heliocentrism, developed by Copernicus in the sixteenth century, radically transformed our understanding of the universe by placing the Sun at the centre of the solar system. In astrology, it opened the way to a more dynamic and less anthropocentric vision of the cosmos. Heliocentric astrology focuses on the positions of the planets relative to the Sun, offering a more universal perspective that is less centred on the Earth. Although less common than geocentric astrology, it is used by some astrologers to explore more spiritual or generational themes.

An arrangement of planets gathered within one half of the zodiac, indicating a concentration of energy.

A hemicycle occurs when several planets are gathered within a zone of 180° or less of the zodiac. This configuration indicates an intense focusing of energy on a particular area of life, but also a polarisation that can create inner tensions. Planets in a hemicycle tend to reinforce one another, but also to confront opposing forces in the empty zones of the chart. The hemicycle can signal significant growth potential if the individual learns to integrate the concentrated energies and to face the challenges that this configuration can generate.

The transmission of traits, talents and challenges from one generation to the next, symbolised by Houses IV and VIII.

In astrology, heredity is often associated with the Fourth House (the home, the roots) and the Eighth House (shared resources, legacies). These houses reveal family influences, innate talents and the challenges handed down from generation to generation. Planets situated in these houses or in aspect to their cusps can indicate inherited gifts or karmic lessons stemming from the family lineage. Astrological heredity goes beyond mere biology to encompass the psychological and spiritual dynamics transmitted within a family.

Literally 'the one who examines the hour'; designates the Ascendant or the chart of the sky as a whole.

The word comes from the Greek 'hōra' (hour) and 'skopos' (observer). Historically, the horoscope designated only the sign rising on the horizon (the Ascendant). By loose extension, today it refers to the media's sun-sign forecasts. In technical astrology, the horoscope is the geometric structure of the sky at a given moment, including planetary positions and house division.

A method of dividing the natal chart into 12 houses, influencing the interpretation of the planets.

The house system determines how the 12 astrological houses are distributed across the signs of the zodiac. There are several systems, each with its own rules for calculating the house cusps. The most common are Placidus, Koch, Campanus, Regiomontanus, and Equal House. The choice of system can influence the interpretation of the natal chart, notably the position of the planets in the houses and the aspects they form with the cusps. Some astrologers prefer one system for its simplicity, others for its astronomical precision or its symbolic relevance.

The twelve sectors of the chart representing the different areas of life.

If the signs indicate “how” energy is expressed, the houses indicate “where” it manifests in concrete terms. The twelve houses cover every aspect of life: identity (I), money (II), communication (III), family (IV), pleasures (V), work (VI), others (VII), crises (VIII), wisdom (IX), career (X), projects (XI) and trials (XII).

The vital point or 'giver of life' in a natal chart according to traditional astrology.

The Hyleg is a fundamental concept of ancient astrology (Hellenistic and medieval) used to determine the vital force and longevity of an individual. Its determination follows a strict protocol of priorities: one examines first the Sun, then the Moon, then the Ascendant, according to their position in the so-called 'hylegiacal' houses (I, VII, IX, X, XI). If the Hyleg is powerfully placed and well aspected by the benefics (Jupiter, Venus), the physical constitution is considered robust. Conversely, square or opposition aspects coming from the malefics (Mars, Saturn) toward the Hyleg were interpreted as threats to health or vitality.

The lowest point of the chart (Fourth House), tied to roots, family and private life.

The Imum Coeli (IC, also called the Nadir of the chart) is the cusp of the Fourth House. It represents the foundation of the personal edifice: family origins, the home, the ancestral heritage and the intimate life, far from the public gaze. It is the point of midnight, symbolising the end of life but also the depths of the unconscious. While the Midheaven rises toward the world, the Imum Coeli takes root in the earth. It reveals the atmosphere of the home during childhood and the way in which the individual needs to recharge in private.

The process of synthesising planetary energies into a coherent whole.

Integration is the ultimate goal of astrological analysis. It is about understanding how the various planets, signs, houses and aspects interact to form a unique personality. Integration involves recognising the strengths and weaknesses of a natal chart, accepting the apparent contradictions and finding ways to reconcile opposing energies. It is a dynamic process that unfolds throughout life, allowing the individual to grow and flourish in harmony with their astrological chart.

The art of synthesising the many symbols of a chart into a coherent reading.

Interpretation is the ultimate stage of astrological practice. It consists in not reading the factors in isolation (e.g. Venus in Leo), but in integrating them into an overall whole. A good interpretation ranks the strengths of the chart (dominant planets) and brings out the main lines of force of the personality and of destiny, while respecting the client's level of awareness.

A reversal of the planetary hierarchy or of the polarities within a chart.

Inversion occurs when the planets of a natal chart are arranged in such a way as to reverse the traditional roles. For example, a planet normally considered weak (such as Mars in Cancer) can become dominant if it is in major aspect with the Sun or the Ascendant. Likewise, polarities can be inverted: a feminine sign may express masculine qualities and vice versa. Inversion is a phenomenon that underscores the complexity and singularity of each natal chart, showing that the general rules of astrology can be circumvented or reinterpreted according to the specific configuration of the chart.

The position of Jupiter in Cancer, where it expresses its potential optimally.

Jupiter is in exaltation in the sign of Cancer. This position confers great sensitivity, a developed intuition and a capacity to nurture others, whether on the physical or emotional plane. Jupiter in Cancer favours family bonds, the protection of loved ones and the search for emotional security. It is a position that encourages expansion through the heart and the emotions.

The position of Jupiter in Capricorn, where it expresses its energies with greater difficulty.

Jupiter is in fall in the sign of Capricorn. This position can indicate challenges related to expansion, confidence and faith. Jupiter in Capricorn can translate into a tendency toward excessive caution, pessimism or difficulty in seizing opportunities. However, it can also confer great discipline, a capacity to work hard to reach one's goals and a practical wisdom gained through experience.

The concept of spiritual cause and effect, linking past actions to present and future experiences.

Karma is a central notion in the Eastern philosophies, notably Hinduism and Buddhism. In astrology, it is often associated with the position of the Lunar Nodes: the South Node (Ketu) symbolises the karmic baggage, while the North Node (Rahu) indicates the direction of evolution. The natal chart can reveal karmic lessons through the aspects formed by the Nodes with the personal planets. Understanding one's astrological karma makes it possible to work consciously on repetitive patterns and to steer one's life toward spiritual growth.

The descending point of intersection of the lunar orbit, tied to the past and to acquired skills.

Called Ketu in Indian astrology or the Dragon's Tail in the medieval tradition, the South Node represents what is already mastered, inherited habits or past karma. It is a zone of ease but also of potential stagnation. Karmic astrology suggests that one should lean on the talents of the South Node in order to achieve the aims of the North Node.

The term grouping together the Sun and the Moon, the two sources of light in the sky.

The Luminaries hold a rank superior to that of the other planets. The Sun (the diurnal Luminary) represents consciousness, the spirit, the will and the father. The Moon (the nocturnal Luminary) embodies the unconscious, instinct, the emotions and the mother. Unlike the planets, the Luminaries never turn retrograde. They are the pillars of the personality: the Sun gives direction and purpose, while the Moon supplies the emotional fuel and the capacity to respond. Their relationship (the phases of the Moon) at the moment of birth is decisive for inner balance.

Traditionally, a planet (Mars, Saturn) or aspect that generates challenges and restrictions.

In ancient astrology, Mars (“the lesser malefic”) and Saturn (“the greater malefic”) were perceived as bringers of misfortune, war or illness. Modern astrology has transformed this view: the malefics are now seen as forces of necessity. Mars supplies the energy to cut through, and Saturn the structure to build. A well-placed malefic planet (in dignity) becomes a tool for success through effort and discipline.

An active, extroverted and emitting energetic polarity.

The so-called 'masculine' signs (or diurnal / positive) comprise the Fire signs (Aries, Leo, Sagittarius) and the Air signs (Gemini, Libra, Aquarius). This classification has nothing to do with the individual's gender, but with the direction of the energy. These signs are oriented outward, toward action, expression and communication. They seek to influence their environment rather than to be influenced by it. In a chart, a predominance of this polarity favors extroversion and quick decision-making.

The highest point of the chart (Tenth House), representing social destiny and career.

The Midheaven (Medium Coeli or MC) is located at the intersection of the ecliptic and the local meridian to the south. It is the cusp of the Tenth House. It symbolizes the individual's ultimate aspiration, their public success, their social status and their professional vocation. Unlike the Ascendant, which represents 'how' one acts, the MC shows 'what' one becomes in the eyes of the world. It is often linked to the figure of the father or of the parent who embodies authority and social law. Its position by sign and the aspects it receives indicate the nature of the ambition and the ease or obstacles encountered in public life.

The classification of the signs according to their energetic dynamic (Cardinal, Fixed, Mutable).

The modes determine how energy is used. Cardinal signs initiate action. Fixed signs stabilize and consolidate. Mutable signs adapt and distribute. A balance among these three modes in a chart allows for a personality capable of initiative, perseverance and flexibility all at once.

One of the three qualities: adaptability, flexibility, transition and versatility.

The mutable signs are Gemini, Virgo, Sagittarius and Pisces. They close each season and embody transition, adaptation and transformation. Natives dominated by the mutable quality are flexible, versatile and able to adjust to any situation. They excel in changing environments and make good mediators. Their strength lies in their flexibility; their weakness, in scattering or inconstancy. A strongly mutable chart can indicate a chameleon personality, brilliant at adaptation but sometimes lacking firm direction. Conversely, a chart devoid of mutability can make the native rigid, unable to adapt to circumstances. The mutable cross is the cross of practical intelligence and communication.

A configuration in which two planets each occupy the other's sign of domicile.

Mutual reception occurs when two planets exchange their domiciles: for example, Mars in Taurus (Venus's domicile) and Venus in Aries (Mars's domicile). Each planet is "hosted" by the other, creating an implicit bond of cooperation. In traditional astrology, mutual reception considerably softens the weakness of a planet in detriment: even though each planet sits in an uncomfortable sign, they support one another. Some astrologers go so far as to consider that a mutual reception is almost equivalent to a harmonious aspect between the two planets. Mutual reception can also occur by exaltation: the Sun in Aries (exaltation) and Mars in Leo (the Sun's sign) create a form of cross reception. It is a subtle yet very useful tool for refining the reading of a chart.

A chart cast for the exact moment and place of an individual's birth.

The natal chart (or birth chart) is a photograph of the sky at the precise moment of birth, seen from the place of birth. It is the founding document of any individual astrological study. The natal chart includes: the position of the ten planets in the signs and houses, the aspects (angles) between the planets, the Ascendant, the Midheaven, and possibly fictitious points (lunar nodes, Lilith, Arabic parts). To calculate it, three pieces of data are essential: the date, the exact time and the place of birth. The natal chart never changes — it represents the native's basic potential. It is then through transits, progressions and solar returns that the astrologer observes how this potential unfolds over time. Scholarly synonym: radix.

That which belongs to the night or favours inwardness.

A chart is nocturnal if the Sun is below the horizon. In this case, the Moon becomes the reference luminary for vitality and destiny. The nocturnal (Feminine) signs favour receptivity, reflection and inner maturation.

The margin of tolerance, in degrees, granted to an aspect for it to be considered active.

The orb is the margin of tolerance, measured in degrees, that the astrologer grants to an aspect in order to consider it effective. For example, an exact trine is 120°; with an orb of 8°, two planets separated by 112° to 128° will form a trine. The tighter the orb, the more powerful the aspect. An exact aspect (an orb of 0° to 1°) is considered very strong; an aspect with a wide orb (7°–8°) is present but weakened. Orbs vary from school to school: traditional astrology used planetary orbs (each planet has its own orb), whereas modern astrology generally uses orbs by aspect (8°–10° for the conjunction, 6°–8° for the square and trine, 4°–6° for the sextile). The luminaries (Sun, Moon) are traditionally granted wider orbs than the slow planets.

A chart’s fundamental tendency to turn outward (diurnal) or inward (nocturnal).

A chart’s orientation is determined by the position of the Sun: if the Sun is above the horizon, the chart is diurnal; otherwise it is nocturnal. This distinction influences the hierarchy of the planets and the native’s psychological dynamic. A diurnal chart favors the diurnal planets (Sun, Jupiter, Saturn), while a nocturnal chart highlights the nocturnal planets (Moon, Venus, Mars). Orientation gives an indication of how the individual expresses their energy: in a more extroverted and assertive way for diurnal charts, and in a more introverted and receptive way for nocturnal ones.

The visibility of a planet emerging from the Sun’s rays to become observable.

Historically, ostentation (or heliacal rising) is a key moment when a planet, previously invisible because it was too close to the Sun, becomes observable again at dawn. Symbolically, this marks the “birth” of the planet’s influence in the concrete world. A planet in ostentation gains authority and the capacity to act.

An individual whose natal chart shows atypical configurations or planets in rare signs.

An outsider in astrology is a person whose natal chart stands out through unusual configurations, such as planets in rare signs (e.g., Uranus in Taurus), planetary clusters in an uncommon sign, or very tight aspects between slow planets. These individuals may feel a certain strangeness or a sense of not belonging to social norms, yet they often possess a unique perspective and a capacity for innovation. Astrology can help us understand the specific strengths and challenges of these outsiders, and value their originality.

The state of a planet that holds no dignity or debility in its current sign.

A peregrine planet is like a traveler with no ties or resources of its own. It is neither at home (domicile), nor honored (exaltation), nor weakened (detriment/fall). Its action depends entirely on the aspects it receives and on the condition of its sign ruler. In ancient astrology, a peregrine planet is often seen as unstable or wandering, searching for its direction without an inner compass.

The position where a planet is most weakened, opposite its exaltation.

A planet’s point of fall is the degree of the zodiac where it loses all its vital strength, generally located 180° from its point of exaltation. For example, Mars is exalted at 28° Capricorn and falls at 28° Cancer. A planet in fall can indicate difficulties in expressing its qualities constructively, blockages, or specific challenges linked to that energy.

A minor aspect of 150° indicating a need for adjustment between two divergent energies.

The quincunx is an aspect that links two signs that have nothing in common (neither element, nor mode, nor polarity). This creates a muffled tension, a sense of unease that demands constant adjustment. Unlike the square, which is an open crisis, the quincunx is a subtle irritation. It is often linked to health or service (by analogy with the 6th and 8th houses). It is an aspect of 'negotiation' where one must learn to make two planetary functions that do not naturally understand each other coexist.

Latin term for the original natal chart, the "root" of every interpretation.

Radix (Latin for "root") is the technical term for the birth chart itself, as opposed to derived charts (solar return, horary chart, transit chart). The radix is astrology's founding document: it holds the native's complete potential and serves as the reference point for any predictive study. When studying transits, the planetary positions of the moment are laid over the radix to gauge their impact. "Radical" is the associated adjective: "the radical Moon" denotes the Moon of the natal chart, as opposed to "the transiting Moon." This distinction is essential in predictive astrology to avoid confusing natal positions with moving ones.

The ascending intersection point of the Moon's orbit, symbolizing the soul's purpose.

In Vedic astrology, the North Node is called Rahu. It represents insatiable appetite, the direction toward which the soul must strive in this life in order to evolve. It is a point of expansion, but also of challenge, since it pushes us out of our comfort zone. Unlike the planets, Rahu is a fictitious mathematical point located where the Moon crosses the ecliptic heading north.

The apparent motion of a planet that seems to move backward through the zodiac.

Retrogradation is an optical illusion caused by the difference in speed between the Earth and the other planets. Symbolically, it points to an internalization of the planet's energy. Instead of expressing itself outwardly, the planetary function calls for reflection, revision, or a return to oneself. For example, retrograde Mercury is often associated with communication delays that force one to rethink plans.

A planet that exercises its authority over a sign, a house or the whole chart.

The ruler (or lord) is the custodian of a sector's energy. For example, the ruler of the Seventh House reveals the quality of contracts and partnerships. The 'Ruler of the Chart' is often the strongest planet (the Almuten) or the one that rules the Ascendant, acting as the guide of destiny.

The planet ruling the sign on the Ascendant, regarded as the pilot of the chart.

Often confused with the “Lord of the Chart,” the ruler of the Ascendant is the most personal and most important planet for the individual. It represents the native themselves, their physical body and their way of acting in the world. Its position by sign and, above all, by house indicates toward which area of life the individual primarily directs their vital energy. For example, if one has a Libra Ascendant, the ruler of the Ascendant is Venus. If that Venus lies in the Ninth House, the quest for meaning, travel or philosophy will be the central driving forces of life.

The planet designated as the 'pilot' of the individual's destiny.

The ruler (or Lord of the Geniture) is generally the ruler of the Ascendant, but it can also be the Almuten (the planet accumulating the most dignities). It represents the individual as a whole, their temperament and their capacity to steer their own life. The condition of this planet determines whether the subject will be master of their choices or tossed about by outer circumstances.

The symbolic bond of ownership between a planet and a zodiacal sign.

Each sign has a “ruler.” For example, Mars rules Aries. The planet is the executive agent of the sign. The study of rulerships (or dispositors) makes it possible to weave links between different parts of the chart: the ruler of the Second House placed in the Tenth House connects finances with career.

A fundamental classification between diurnal and nocturnal charts.

Sect is a cornerstone concept of Hellenistic astrology that has come strongly back into favor today. A chart belongs to the "sect of the day" if the Sun is above the horizon, or to the "sect of the night" if it is below. This radically changes the strength of the planets: Jupiter is more beneficial by day, while Venus is more so by night. Likewise, Saturn is less "malefic" by day, and Mars is more manageable by night.

A technical synonym for an astrological house.

The term sector is often preferred by statistical or scientific astrology (e.g., the Gauquelin sectors). It denotes a portion of the local space (the sky divided into twelve).

A minor aspect of 30° linking two consecutive signs.

The semi-sextile is an aspect of 30 degrees. Since it links signs that follow one another, it brings together energies that are very different yet adjacent. Its influence is often considered weak or neutral, acting as a subtle link of growth. It compels the individual to integrate the following or preceding stage of their evolution. Although traditionally minor, it can indicate a friction necessary to move from one state of consciousness to another.

The moment when two planets move away from the exact aspect.

Separation occurs when the faster planet passes the degree of the exact aspect with another planet. The influence of the aspect gradually diminishes. In natal astrology, this can indicate an experience already integrated or a character trait that is less compelling. In predictive astrology, a separating aspect often indicates that the major event has already passed.

A zodiac based on the actual constellations of the sky.

The sidereal zodiac is mainly used in Vedic astrology (India) and by some Western astrologers. It takes into account the precession of the equinoxes, which currently creates a discrepancy of about 24 degrees with the tropical zodiac. For the sidereal zodiac, the sign corresponds to the actual position of the stars behind the planets.

A division of the zodiac into 12 parts of 30° each, every one with specific characteristics.

The zodiac is divided into 12 signs of 30 degrees each, corresponding to the constellations the Sun crosses over the course of the year. Each sign has its own qualities, elements, and modes, influencing the way planets express themselves when placed within it. The signs are as follows: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and Pisces. They form the basis of astrological interpretation and color every aspect of the natal chart.

A planet or point designated to represent a specific area of life.

A distinction is made between natural significators (e.g., Venus for love, Saturn for death or structure) and accidental significators (the ruler of the 2nd House for finances, or of the 7th House for marriage). The art of interpretation lies in synthesizing the action of the natural significator with that of the house ruler in order to predict how a specific area will unfold.

Synonym for the natal chart: a graphic representation of planetary positions at a given moment.

The sky map is the historical term for what we now call the natal chart or birth chart. It depicts, as a circular diagram, the exact position of the planets, signs and houses at the precise moment of an event — usually a birth. The sky map can also be drawn for a specific event (horary astrology), for the founding of a company or for a country (mundane astrology). The term reminds us that astrology is first and foremost an art of observing the sky, transposed onto paper or screen. Three pieces of information are needed to cast a sky map: the date, the exact time and the geographic location. The chart is read by combining the planetary positions in sign, in house and the aspects they form with one another.

A chart cast for the exact moment the Sun returns to its natal position each year.

The solar return (SR) is one of the most widely used predictive techniques in astrology. It involves casting a chart for the precise moment when the transiting Sun returns exactly to the degree, minute, and second of its position in the natal chart. This return occurs every year around the birthday. The solar return chart is interpreted as an "energetic photograph" of the year ahead. The SR Ascendant, the position of the Moon, and the distribution of the planets across the houses give valuable indications of the areas of life that will be activated. The SR does not replace the study of transits: it complements them by offering a yearly framework. André Barbault and Alexandre Volguine did much to popularize this technique in French-language astrology.

The moment when a planet appears to stop before changing direction.

The station occurs at the beginning and end of a retrograde phase. A stationary planet has its influence considerably amplified in the chart: it is as if 'focused' on a precise point of the zodiac. A stationary-direct planet is often seen as very positive, since it is about to release its energy after a phase of withdrawal.

A concentration of at least three (sometimes four) planets in the same sign or house.

The stellium (or planetary cluster) creates a massive energetic focus in one area of life or one type of character. This concentration makes the individual strongly typed by the sign concerned, sometimes even overshadowing the importance of the Sun sign or the Ascendant. It is a point of strength but also a challenge, since every transit over this zone affects several planets at once.

The Sun's placement in Aries, where it expresses its potential at its best.

The Sun is in exaltation in the sign of Aries. This placement grants it great vitality, a strong will, and the ability to initiate projects with enthusiasm. The Sun in Aries favors self-assertion, courage, and initiative. It is a placement that encourages one to live one's singularity to the full and to embrace challenges boldly.

The Sun's placement in Libra, where it expresses its energies with greater difficulty.

The Sun is in fall in the sign of Libra. This placement can point to challenges connected with self-assertion, confidence, and clarity of identity. The Sun in Libra may translate into a tendency toward indecision, a need to please, or difficulty in asserting oneself without compromise. However, it can also confer great diplomacy, an ability to create harmony, and a sensitivity to the needs of others.

A configuration of tension formed by two planets in opposition, both square a third.

The T-Square is one of the most dynamic figures in the chart. It generates considerable tension that drives the individual to act and to resolve conflicts. The “apex” planet (the one that receives both squares) is the discharge point for the stress. It is there that the most concrete achievements manifest, often after overcoming great difficulties. This is a frequent configuration in people with a great destiny or an iron will.

A table used to calculate the cusps of the astrological houses according to latitude and sidereal time.

The table of houses is an indispensable calculation tool for casting a chart. For a given geographic latitude and sidereal time, it provides the zodiacal degrees corresponding to the cusps (beginnings) of the twelve houses. Before the computer age, every astrologer owned their own table of houses, the most famous being those of Placidus and Koch. There are as many tables as there are systems of house division: Placidus, Koch, Regiomontanus, Campanus, equal houses, and so on. Each system divides the celestial sphere differently, which can significantly alter the placement of the planets within the houses. Today, astrology software performs these calculations instantly, but understanding the principle of the table of houses remains essential for grasping the logic of house division and the importance of the exact time of birth.

Unequal subdivisions of each zodiacal sign, ruled by the planets except the luminaries.

Each 30° sign is divided into five segments called 'Terms', each assigned to one of the five traditional planets (Mercury, Venus, Mars, Jupiter, Saturn). The planet ruling the term in which a body falls imprints its 'manner of being' upon it. This is a subtle dignity used to refine character descriptions or for the technique of primary directions. The two best-known systems are the Egyptian Terms and the Ptolemaic Terms.

A term designating the planets located beyond the orbit of Saturn: Uranus, Neptune and Pluto.

The trans-Saturnian planets (also called collective or generational planets) were unknown to ancient astrology. They symbolise forces that exceed individual control: revolutions, the collective unconscious, slow and profound transformations. Because of their slowness, they mark entire generations rather than purely personal characters, except when they form a close aspect with a luminary or an angle.

The passage of a moving planet over a sensitive point of the natal chart.

The transit is the most common predictive technique in astrology. It consists of observing the passage of the planets in the current sky (in real time) relative to the positions of the natal chart. When a transiting planet forms an exact aspect with a natal planet, it 'activates' the latter and triggers events or realisations connected to the symbolism at play. Transits of the fast planets (Moon, Mercury, Venus, Mars) are brief and daily. Transits of the slow planets (Jupiter, Saturn, Uranus, Neptune, Pluto) mark long, profound periods of transformation. A transit of Saturn over the natal Sun, for example, lasts several months and imposes a maturity assessment. The applying orb (the planet approaching the exact aspect) is often felt more intensely than the separating orb.

The grouping of the twelve signs into four groups of three, according to their element.

Triplicity divides the zodiac by element: Fire (Aries, Leo, Sagittarius), Earth (Taurus, Virgo, Capricorn), Air (Gemini, Libra, Aquarius) and Water (Cancer, Scorpio, Pisces). Each triplicity shares a common elemental nature that influences the basic temperament. In traditional astrology, each triplicity is governed by a group of 'triplicity rulers' that vary according to the day/night cycle of the chart.

The dignity of a planet found in a sign of the same element (triplicity) that it rules.

Triplicity rulership is an important minor dignity. It indicates that a planet has contextual resources and support. In medieval and Renaissance astrology, different rulers are used depending on whether the chart is diurnal (born by day) or nocturnal (born by night). A planet in its triplicity is like a guest who feels at ease among friends: it is not the master of the house, but it benefits from favourable conditions in which to act.

A zodiac based on the seasons, beginning at the vernal point (0° Aries).

The tropical zodiac is the one used by almost all Western astrologers. It is not based on the physical constellations but on the Earth-Sun relationship. The 0° of Aries corresponds to the spring equinox. This zodiac symbolises human psychological evolution in connection with the cycles of terrestrial nature.

A period of sudden change, rebellion or awakening triggered by the passage of Uranus over a sensitive point of the natal chart.

The transit of Uranus is often synonymous with unexpected upheavals, sudden realisations or breaks with the past. When it transits a house or forms a major aspect with a personal planet, it can provoke an irresistible urge for change, whether in relationships, career or beliefs. Although these transits can be destabilising, they also offer the opportunity to free oneself from limiting patterns and embrace a more authentic version of oneself.

An old term designating a planet or aspect considered particularly beneficial or noble.

In classical astrology, the term 'venerable' described certain bodies or configurations deemed particularly favourable, notably the benefic planets (Venus, Jupiter) and the harmonious aspects (trine, sextile). The expression 'venerable planet' suggested a noble influence, bringing good fortune and well-being. This terminology reflects a deterministic view of astrology that no longer holds in modern practice. Today, we prefer to speak of beneficial aspects or planets in dignity, recognising that even the most favourable configurations require awareness and inner work to be fully realised. The term remains useful for understanding ancient astrological texts, in which the distinction between 'venerable' and 'vicious' influences structured the entire interpretation.

A zone of the zodiac running from 15° Libra to 15° Scorpio, considered baleful.

The Via Combusta is a portion of the sky historically regarded as highly unstable and malefic. A planet (particularly the Moon) located in this zone is perceived as weakened or subject to unpredictable trials. This belief stems from the fact that this zone combines the fall of the Sun (Libra) and the detriment of Venus with the fall of the Moon (Scorpio). In horary astrology, the Moon in the Via Combusta often makes judgement uncertain or foretells a chaotic outcome.

One of the four elements: emotions, intuition, empathy and psychic depth.

The Water element gathers the signs of Cancer, Scorpio and Pisces. It represents the world of emotions, intuition, empathy and the unconscious. Natives strongly marked by Water feel things before understanding them intellectually: they pick up on moods, absorb the emotions of others and often possess an almost mediumistic sensitivity. Water is cold and moist by nature. It fertilizes but can also overwhelm. In excess, Water produces hypersensitivity, emotional dependence or a tendency to flee reality. A chart devoid of Water can signal a difficulty in accessing one’s emotions, in showing empathy or in surrendering to intimacy. Water is the invisible bond between beings — it reminds us that we are all connected by the same emotional source.

The state of a body whose light or separating distance is increasing.

We speak chiefly of the waxing Moon between the New Moon and the Full Moon. By extension, a planet is said to be waxing relative to the Sun when it moves away from it toward the opposition. Symbolically, the waxing phase represents externalization, the accumulation of experience and the building of concrete forms in the world.

A complex aspect figure called the 'Finger of God', formed by two quincunxes and a sextile.

The Yod is a rare configuration that points towards a specific planet (the apex). It symbolises a particular destiny, a mission or an inner tension demanding constant adjustment. The apex planet receives the energy of the two other planets through quincunx aspects (150°), which creates a sense of fate or spiritual necessity. The individual often feels driven by invisible forces to develop the qualities of the apex in order to resolve an underlying conflict of personality.

The point of the sky located exactly vertically above the observer.

The zenith is the point of the celestial sphere located exactly vertically above the observer, at 90° from the horizon in every direction. In astrology, the zenith is often confused with the Midheaven (MC), but the two do not coincide exactly. The MC is the intersection of the ecliptic with the local meridian, whereas the zenith is strictly the highest point directly overhead. The difference between the two depends on the latitude of the place of birth and the declination of the point considered. In everyday practice, this technical distinction is often overlooked, but it has its importance in certain systems of house division (notably the Campanus system, which uses the zenith as a reference). The point diametrically opposite the zenith is the nadir.

A 360° celestial band divided into twelve signs of 30° each, the frame of reference of astrology.

The zodiac is the 360° band of sky centred on the ecliptic (the plane of the Earth's orbit around the Sun) within which the planets of the solar system move. It is divided into twelve signs of 30° each, from Aries to Pisces. There are two zodiacs: the tropical zodiac, based on the seasons and used in Western astrology, and the sidereal zodiac, aligned with the constellations and used in Vedic astrology. The tropical zodiac begins at the vernal point (0° Aries = spring equinox). The word 'zodiac' comes from the Greek zōidiakos kyklos, 'circle of little animals', in reference to the animal figures of the constellations. The zodiac is the fundamental framework of astrology: it is what determines the signs in which the planets, the Ascendant and the house cusps fall.

A zodiac based on the actual constellations, with unequal divisions.

The zodiac of the constellations is an approach that divides the sky according to the actual constellations, without reducing them to 30° segments. The constellations of the zodiac have very different sizes: Virgo covers about 44°, whereas Scorpius covers only 7°. This method is more faithful to astronomy but less practical for astrology, as it complicates calculations and interpretations. It is rarely used in modern astrological practice.

A zodiac based on the actual constellations, including the fixed stars.

The zodiac of the fixed stars is an older and more astronomical approach to astrology, which considers not only the planets but also the fixed stars (bright stars with relatively stable positions). These stars are distributed among the constellations of the zodiac and have specific meanings. For example, the fixed star Regulus in Leo is associated with royalty and nobility. This approach is less common today but offers an additional dimension of interpretation.