- zodiac - a belt-shaped region in the heavens on either side to the ecliptic; divided into 12 constellations or signs for astrological purposes
--1 is a kind of region, part
--1 is a part of
--1 has parts:celestial sphere, sphere, empyrean, firmament, heavens, vault of heaven, welkin - zodiac - (astrology) a circular diagram representing the 12 zodiacal constellations and showing their signs
--2 is a kind of diagram
- zodiac - (astrology) a circular diagram representing the 12 zodiacal constellations and showing their signs