Astrology Terms Dictionary
A complete reference for astrology's technical vocabulary. From ancient Hellenistic concepts like cazimi and mutual reception to modern interpretive frameworks, every term is defined with real-world significance and worked examples.
A–Z Astrology Terms
Air Signs
Air signs are Gemini, Libra, and Aquarius — the triplicity associated with the element of air and characterized by quali…
Almuten
The almuten, from the Arabic al-mubtazz meaning the victor or the one who prevails, is the planet that holds the greates…
Angular Houses
Angular houses are the first, fourth, seventh, and tenth houses of the horoscope, marking the four directional angles of…
Antiscia
Antiscia are mirror points in the zodiac calculated by reflection across the Cancer-Capricorn axis — the solstice axis t…
Applying Aspect
An applying aspect occurs when a faster-moving planet is moving toward an exact angular relationship with a slower-movin…
Ascendant/Rising Sign
The Ascendant, commonly known as the Rising Sign, is the zodiac sign that was cresting the eastern horizon at the precis…
Besieged Planet
A besieged planet is one caught between the two malefic planets — traditionally Mars and Saturn — without any intervenin…
Black Moon Lilith
Black Moon Lilith is the second focal point of the Moon's elliptical orbit around Earth — the point farthest from Earth …
Cadent Houses
Cadent houses are the third, sixth, ninth, and twelfth houses of the horoscope, positioned after the succedent houses an…
Cardinal Signs
Cardinal signs are the four signs that mark the beginning of the seasons: Aries initiating spring, Cancer initiating sum…
Cazimi
Cazimi is the most elevated form of solar proximity, occurring when a planet falls within seventeen arc minutes — roughl…
Cazimi vs Combust
The contrast between cazimi and combustion represents one of astrology's most dramatic reversals of fortune within an ex…
Chart Ruler
The chart ruler is the planet that rules the sign on the Ascendant of a natal, horary, or electional chart. Since the As…
Chiron
Chiron is a small celestial body classified as a centaur object, orbiting erratically between Saturn and Uranus. Discove…
Combustion
Combustion is a debilitating planetary condition in which a planet falls within approximately eight degrees of the Sun a…
Composite Chart
A composite chart is a single chart created by mathematically calculating the midpoints between two people's correspondi…
Conjunction
A conjunction is formed when two or more planets occupy the same or very nearby degrees in the zodiac, typically within …
Decanate
A decanate, also called a decan, is a subdivision of each zodiac sign into three equal segments of ten degrees each, res…
Descendant
The Descendant is the point directly opposite the Ascendant on the natal chart, sitting on the western horizon and marki…
Detriment
Detriment is the opposite of domicile dignity: a planet is said to be in detriment when placed in the sign directly oppo…
Dignity
Dignity is a traditional astrological concept describing the strength and comfort a planet experiences when placed in a …
Diurnal vs Nocturnal
The diurnal and nocturnal distinction is one of the most fundamental polarities in traditional astrology, organizing pla…
Domicile
Domicile, also called rulership, is the most important of the five essential dignities, describing the relationship betw…
Earth Signs
Earth signs are Taurus, Virgo, and Capricorn — the triplicity associated with the element of earth and characterized by …
Eclipse
An eclipse occurs when the Earth, Moon, and Sun align closely enough that one body casts its shadow on another. A solar …
Electional Astrology
Electional astrology is the branch of astrology dedicated to selecting the most auspicious moment to begin a specific ac…
Exaltation
Exaltation is one of the five classical essential dignities in traditional astrology, describing a placement where a pla…
Fall
Fall is the essential dignity placement opposite to exaltation: a planet is in fall when placed in the sign directly opp…
Firdaria
Firdaria is a Persian time-lord system that divides a human life into sequential planetary periods of varying lengths ba…
Fire Signs
Fire signs are Aries, Leo, and Sagittarius — the triplicity of the zodiac associated with the element of fire and charac…
Fixed Signs
Fixed signs are the four signs that fall in the middle of each season, after the cardinal sign has initiated and before …
Fixed Stars
Fixed stars are stars beyond our solar system that appear to maintain consistent positions relative to one another in th…
Grand Cross
A Grand Cross, also called a Grand Square, is one of the most challenging and dynamic planetary configurations in astrol…
Grand Trine
A Grand Trine is a powerful configuration formed when three planets are each approximately 120 degrees apart from one an…
Heliacal Rising
The heliacal rising of a planet or star is the moment when it first becomes visible on the eastern horizon just before s…
Horary Astrology
Horary astrology is the branch of astrology that answers specific questions by casting a chart for the exact moment a si…
IC/Imum Coeli
The Imum Coeli, universally abbreviated as IC from the Latin for 'bottom of the sky,' is the lowest point of the natal c…
Intercepted Sign
An intercepted sign is a zodiac sign that falls entirely within a single house of the horoscope, contained from beginnin…
Lunar Return
A lunar return is a predictive chart cast for the exact moment each month when the transiting Moon returns to the precis…
Midheaven/MC
The Midheaven, abbreviated as MC from the Latin Medium Coeli meaning 'middle of the sky,' is the highest point the Sun c…
Mundane Astrology
Mundane astrology is the branch of astrology concerned with world events, political developments, natural phenomena, and…
Mutable Signs
Mutable signs are the four signs that fall at the end of each season, bridging one season's close and the next's beginni…
Mutual Reception
Mutual reception occurs when two planets each occupy the sign ruled by the other, creating a reciprocal exchange of dign…
Natal Chart
The natal chart, also called the birth chart or horoscope, is a circular map of the sky calculated for the exact moment,…
North Node
The North Node, also called the True Node or Dragon's Head, is not a physical planet but a mathematical point marking wh…
Opposition
An opposition is formed when two planets are approximately 180 degrees apart in the zodiac, meaning they occupy directly…
Orb
An orb is the allowable degree of separation between two planets or between a planet and a sensitive point within which …
Part of Fortune
The Part of Fortune, known in ancient Greek astrology as Kleros or Lot of Fortune, is one of the most important Arabic P…
Peregrine
Peregrine is the condition of a planet that holds no essential dignity or debility in its current zodiacal position — it…
Planetary Dignity Table
The planetary dignity table is a structured reference showing the essential dignities and debilities of each of the seve…
Planetary Hour
Planetary hours are an ancient system that divides each day and night into twelve unequal temporal segments, assigning e…
Planetary War
Planetary war, known in Sanskrit as Graha Yuddha, occurs when two visible planets other than the Sun and Moon come withi…
Profection
Profection is one of the most important time-lord techniques in Hellenistic and medieval astrology, activating a new hou…
Progression
Progressions are a predictive technique in which the natal chart is symbolically advanced to reflect inner development a…
Quincunx
The quincunx, also known as the inconjunct, is an astrological aspect formed when two planets are approximately one hund…
Retrograde
Retrograde is the apparent backward motion of a planet as observed from Earth, created by the difference in orbital spee…
Sect
Sect is an ancient astrological principle dividing charts into two categories — diurnal and nocturnal — based on whether…
Separating Aspect
A separating aspect occurs when two planets have passed the point of exact angular contact and the faster-moving planet …
Sextile
A sextile is formed when two planets are approximately 60 degrees apart, occupying signs of complementary but different …
Solar Return
A solar return is a chart calculated for the exact moment the transiting Sun returns to the precise degree and minute it…
South Node
The South Node, also called the Dragon's Tail, is the lunar node diametrically opposite the North Node. It marks where t…
Square
A square is formed when two planets are approximately 90 degrees apart in the zodiac, occupying signs of the same modali…
Stellium
A Stellium is a cluster of three or more planets gathered in the same sign or the same house of the natal chart, creatin…
Succedent Houses
Succedent houses are the second, fifth, eighth, and eleventh houses of the horoscope, following directly after the angul…
Superior vs Inferior Planets
The classical distinction between superior and inferior planets divides the seven traditional planets based on their orb…
Synastry
Synastry is the branch of astrology that examines compatibility and the dynamics between two individuals by comparing th…
T-Square
A T-Square is a challenging and dynamic configuration formed by three planets: two in opposition to each other, with a t…
Time Lord
A time lord is the planet designated as the primary ruler and governor of a particular period in a person's life within …
Transit
A transit is the ongoing movement of a planet through the zodiac as observed in real time, and specifically the relation…
Trine
A trine is formed when two planets are approximately 120 degrees apart, meaning they occupy signs of the same element — …
Vertex
The Vertex is a mathematically calculated point in the natal chart that represents the intersection of the ecliptic with…
Void of Course Moon
The Moon is said to be void of course from the moment it makes its final major aspect to any planet in its current zodia…
Water Signs
Water signs are Cancer, Scorpio, and Pisces — the triplicity associated with the element of water and characterized by q…
Whole Sign Houses
Whole sign houses is a house division system in which each of the twelve zodiac signs constitutes one complete house, be…
Yod
A Yod, often called the Finger of God or Finger of Fate, is a rare and mysterious configuration formed by two planets in…
Zodiacal Releasing
Zodiacal releasing is an advanced time-lord technique from Hellenistic astrology, described in detail by Vettius Valens …