Astrology Glossary

Your complete guide to astrological terminology. Learn the meaning of zodiac signs, planets, aspects, houses, and essential astrology concepts.

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Quick Reference Guide

Planets

  • Sun - Core identity, life purpose
  • Moon - Emotions, inner self
  • Mercury - Communication, thinking
  • Venus - Love, beauty, values
  • Mars - Action, energy, drive
  • Jupiter - Growth, expansion, wisdom
  • Saturn - Structure, responsibility, karma
  • Uranus - Innovation, rebellion, change
  • Neptune - Dreams, spirituality, illusion
  • Pluto - Transformation, power, rebirth

Zodiac Signs

  • Aries - Courageous, independent, leader
  • Taurus - Patient, reliable, sensual
  • Gemini - Adaptable, communicative, curious
  • Cancer - Nurturing, intuitive, protective
  • Leo - Creative, confident, generous
  • Virgo - Practical, analytical, helpful
  • Libra - Diplomatic, fair, harmonious
  • Scorpio - Intense, passionate, transformative
  • Sagittarius - Optimistic, philosophical, adventurous
  • Capricorn - Ambitious, disciplined, responsible
  • Aquarius - Innovative, humanitarian, independent
  • Pisces - Compassionate, artistic, spiritual

Major Aspects

  • Conjunction (0°) - Unity, intensity
  • Sextile (60°) - Opportunity, ease
  • Square (90°) - Tension, action needed
  • Trine (120°) - Harmony, natural talent
  • Opposition (180°) - Balance, awareness

A-Z Astrology Terms

A

Ascendant (Rising Sign)

Signs & Houses

The zodiac sign that was rising on the eastern horizon at the exact time of your birth. It represents your outward personality and first impressions.

Aspect

Planetary Relationships

The geometric angle formed between two planets in a birth chart. Aspects show how planetary energies interact and influence each other.

Astro Twins

Concepts

Two people born at the same time and place, sharing identical birth charts. Used to study the influence of environment vs. astrology.

B

Birth Chart (Natal Chart)

Charts

A snapshot of the celestial bodies at the exact moment of your birth, showing planetary positions and their relationships.

Big Three

Signs & Houses

The three most important components of your birth chart: Sun sign (core identity), Moon sign (emotional nature), and Rising sign (outward personality).

C

Conjunction

Aspects

An aspect where two planets are very close together (0° apart). Their energies blend and intensify each other.

Cusp

Signs & Houses

The boundary line between two zodiac signs or houses. People born on a cusp may exhibit traits of both signs.

Combust

Planetary States

When a planet is very close to the Sun (within 8°), making it difficult to express its energy clearly.

D

Decan

Signs & Houses

Each zodiac sign is divided into three 10° sections called decans, each with its own planetary ruler and characteristics.

Dignity

Planetary States

The strength or weakness of a planet in a particular sign or house. Planets in dignity are stronger and more effective.

Domicile

Planetary States

A planet's home sign where it functions most naturally and powerfully (e.g., Mars in Aries, Venus in Taurus).

E

Eclipse

Celestial Events

When the Sun, Moon, and Earth align, creating either a solar eclipse (New Moon) or lunar eclipse (Full Moon).

Exaltation

Planetary States

A planet's most powerful position in a sign (e.g., Sun in Aries, Moon in Taurus). Planets in exaltation are honored and strengthened.

Elements

Concepts

The four fundamental qualities in astrology: Fire (action), Earth (practicality), Air (intellect), Water (emotion).

H

House

Signs & Houses

One of 12 sections of the birth chart representing different areas of life (career, relationships, home, etc.).

Horoscope

Charts

A forecast of astrological influences for a specific time period, often daily, weekly, or monthly.

M

Midheaven (MC)

Signs & Houses

The highest point in the birth chart (10th house cusp), representing career, reputation, and life purpose.

Moon Sign

Signs & Houses

The zodiac sign the Moon was in at your birth, representing your emotional nature and inner self.

Mutable Signs

Signs & Houses

The flexible, adaptable signs: Gemini, Virgo, Sagittarius, and Pisces. They represent change and versatility.

N

Natal Chart

Charts

See Birth Chart. The astrological map created for the moment of your birth.

Nodes

Planetary Bodies

The Lunar Nodes (North Node and South Node) represent your life purpose and past life karma.

O

Opposition

Aspects

An aspect where planets are 180° apart, creating tension and the need for balance between opposing energies.

Orb

Aspects

The allowable margin of error for an aspect to be considered valid (usually 6-10° depending on the aspect).

P

Planet

Planetary Bodies

Celestial bodies that influence different aspects of human life and personality in astrology.

Pluto

Planetary Bodies

The planet of transformation, power, death, and rebirth. Represents deep psychological change and regeneration.

Progression

Techniques

A technique where planets are moved forward in time to show how your birth chart evolves throughout life.

Q

Quincunx

Aspects

An aspect of 150° between planets, representing adjustment and compromise between incompatible energies.

Quintile

Aspects

A minor aspect of 72°, associated with creativity and unique talents.

R

Retrograde

Planetary Motion

When a planet appears to move backward from Earth's perspective, intensifying its energy and requiring review.

Rising Sign

Signs & Houses

See Ascendant. The sign on the eastern horizon at your birth, representing your outward personality.

S

Sextile

Aspects

An aspect of 60° between planets, representing opportunity and positive cooperation.

Square

Aspects

An aspect of 90° between planets, creating tension and the need for action to resolve challenges.

Sun Sign

Signs & Houses

The zodiac sign the Sun was in at your birth, representing your core identity and life purpose.

Synastry

Techniques

The comparison of two birth charts to understand relationship compatibility and dynamics.

T

Transit

Techniques

The current position of planets and how they interact with your birth chart at any given time.

Trine

Aspects

An aspect of 120° between planets, representing harmony, ease, and natural talent.

Z

Zodiac

Signs & Houses

The 12 constellations that form a belt around Earth, each 30° wide, through which the Sun, Moon, and planets travel.

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2

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