Astrology Terms: Your Essential Glossary of Definitions and Meanings

Ascendant, transit, trine: Do these words sound like a foreign language? Enough with the astrological jargon! Many astrology terms are based on simple ideas. In this essential glossary, you’ll learn what the most important terms mean and how they fit together. That way, you can better understand astrological interpretations and explore your birth chart step by step without getting lost in the terminology.

Getting started: Zodiac, horoscope, and birth chart

The zodiac, also known as the zodiac belt, consists of twelve 30-degree sections along the Sun’s apparent path. In astrology, it’s used to describe personalities and interpret future developments.

A horoscope links astrological positions to statements about personality traits and possible events. Your birth chart, also called a natal chart, shows the positions of the planets at the time of your birth. Astrologers interpret these configurations.

A glyph is the symbol for a planet or zodiac sign. If the small symbols seem unfamiliar at first, look them up one at a time rather than trying to learn them all at once.

Sun, Moon, and Ascendant: Three key terms

Your Sun sign is what’s commonly called your star sign. In astrology, the Sun represents identity, vitality, and your conscious sense of self.

Your Moon sign is determined by the Moon’s position at the time of your birth. It’s associated with your emotional world, personal needs, and emotional responses.

The Ascendant, also known as the Rising Sign, is the sign on the eastern horizon at the moment of your birth. It’s said to show how you come across to others and the path you take through life. Its opposite point is called the Descendant. It’s associated with qualities you reject in others and may not yet have accepted in yourself.

The twelve zodiac signs at a glance

Each sign is associated with certain traits and ruling planets. These short profiles will help you recognize the terms:

• Aries: The first sign; Mars represents passionate, ambitious, and dynamic drive.
• Taurus: The second sign; ruled by Venus and associated with pleasure, material pursuits, and ambition.
• Gemini: The third sign; Mercury shapes its sociable, intellectual, and impulsive associations.
• Cancer: The fourth sign; ruled by the Moon and described as sensitive, intuitive, and protective.
• Leo: The fifth sign; the Sun represents generosity, confidence, and loyalty.
• Virgo: The sixth sign; Mercury is associated with reliability, analysis, and hard work.
• Libra: The seventh sign; Venus shapes its associations with balance, harmony, and idealism.
• Scorpio: The eighth sign; Mars and Pluto represent passion, intensity, and jealousy.
• Sagittarius: The ninth sign; Jupiter is associated with a love of freedom, intellectual curiosity, and optimism.
• Capricorn: The tenth sign; Saturn shapes its associations with discipline, diligence, and practical thinking.
• Aquarius: The eleventh sign; Saturn and Uranus are associated with independence, unconventionality, and rebellion.
• Pisces: The twelfth sign; Jupiter and Neptune represent creativity, empathy, and emotionality.

Elements and modalities: How the signs are grouped

The four elements group signs that share astrological qualities. Fire signs are Aries, Leo, and Sagittarius. Earth signs are Taurus, Virgo, and Capricorn. Air signs include Gemini, Libra, and Aquarius; water signs are Cancer, Scorpio, and Pisces.

Modality, on the other hand, describes how energy is expressed:

• Cardinal: Aries, Cancer, Libra, and Capricorn represent new beginnings, leadership, and fresh ventures.
• Fixed: Taurus, Leo, Scorpio, and Aquarius are associated with perseverance and steady energy.
• Mutable: Gemini, Virgo, Sagittarius, and Pisces are considered flexible and versatile.

Polarities further divide the signs into symbolically feminine and masculine energies. Earth and water signs belong to the first group, while fire and air signs belong to the second. A sister sign is opposite your sign in the zodiac and shares its modality.

Houses and important points in the birth chart

The twelve houses represent different areas of life. According to astrological interpretation, the signs within these areas bring their qualities to the topics associated with each house. A house cusp marks the boundary between two houses; the boundary between signs is also called a cusp.

The Medium Coeli, or MC, also known as the Midheaven, is at the cusp of the tenth house. It represents goals, reputation, and career path. The lunar nodes are read as an axis of development: the North Node points to your purpose, while the South Node represents past experience.

Planets: The main astrological roles

A ruling planet is associated with a particular sign and shapes its astrological meaning. Some signs have two ruling planets. You’ll come across these terms especially often:

• Mercury: Communication, expression, and processing information.
• Venus: Love, beauty, art, and personal values.
• Mars: Passion, ambition, assertiveness, and drive.
• Jupiter: Luck, abundance, future plans, and success.
• Saturn: Boundaries, responsibilities, structure, and self-control.
• Uranus: Unconventionality, upheaval, and rebellion.
• Neptune: Dreams and the subconscious.
• Pluto: Transformation, the subconscious, and personal growth.

Slow-moving planets are also called generational planets because their sign positions are shared by larger groups of people. When a planet is very close to the Sun, it’s called combust, or burned: its positive effects are thought to be weakened.

Aspects: When planets interact

Aspects are angular relationships in a birth chart. Major aspects are associated with actions and decisions, while minor aspects are more closely linked to inner changes. Minor aspects include the semisextile, quintile, and quincunx.

• Conjunction, 0 degrees: Two planets are together; their energies combine.
• Sextile, 60 degrees: Considered calming and relieving.
• Square, 90 degrees: Represents tension and the opportunity to actively work through conflicts.
• Trine, 120 degrees: Associated with harmony.
• Opposition, 180 degrees: Planets opposite one another can indicate contrasts and attraction.

The orb describes the angular distance, or deviation, in an aspect. A grand trine is formed by three planets in a triangular pattern. A Yod combines a sextile with two quincunxes. A stellium is a group of at least three planets in the same sign.

Understanding transits, retrogrades, and returns

A transit describes a planet’s movement across the sky. A cycle is the time it takes to complete a full orbit. During retrograde motion, a planet appears to move backward from Earth’s perspective. In astrology, this phase is interpreted as an opportunity to review existing themes; direct motion describes the apparent forward movement.

A planetary return symbolically marks the beginning of a new cycle. During a solar return, the Sun returns to its birth position; during a lunar return, the Moon does. The Saturn return occurs approximately every 30 years.

Moon terms and other fascinating words

The eight phases of the Moon run from the new moon through the waxing crescent, first quarter, and waxing gibbous to the full moon. They’re followed by the waning gibbous, last quarter, and waning crescent. A supermoon is a new or full moon that occurs when the Moon is close to Earth. During an eclipse, the light or visibility of a celestial body is obscured.

Ceres represents nurturing, Juno commitment, and Pallas wisdom, justice, and art. Lilith symbolizes hidden desires. Synastry compares two birth charts to examine the connections between them. Synchronicity refers to strikingly meaningful coincidences; divination means seeking intuitive guidance, for example through tarot or runes.

Your next step: Understand the basics, then dig deeper

You don’t have to memorize all this astrological vocabulary right away. Start with the Sun, Moon, and Ascendant, then add houses and aspects. Save this glossary for reference. Little by little, confusing technical terms will become a clear system that you can explore with curiosity rather than feeling overwhelmed.