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Zodiac Glossary

Plain-language definitions for the most common zodiac, astrology and astronomy terms.

Sun sign

The astrological sign occupied by the Sun in a birth chart.

Zodiac

A band or coordinate framework around the ecliptic, interpreted differently in astrology and astronomy.

Ecliptic

The Sun’s apparent annual path across the sky as seen from Earth.

Cusp

A boundary between astrological signs or houses.

Element

One of four symbolic groups in Western astrology: fire, earth, air and water.

Modality

One of three sign qualities: cardinal, fixed and mutable.

Ruling planet

A planet traditionally associated with a zodiac sign.

Birth chart

An astrological diagram representing celestial positions for a specific time and place.

Constellation

An officially defined region of the sky; in casual use, also a recognizable star pattern.

ZodiacCalendar.com

A visual, plain-language guide to zodiac dates, symbols, systems and sky context.

Astrology is a cultural and interpretive tradition, not an established science. Astronomy content is clearly separated.

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