zodiac

n. diagram representing the twelve zodiac signs

For other uses, see Zodiac (disambiguation). The term zodiac denotes an annual cycle of twelve stations along the ecliptic, the apparent path of the sun across the heavens through the constellations that divide the ecliptic into twelve equal zones of celestial longitude. The zodiac is the first known celestial coordinate system. There are two apparently independently created zodiacs. Babylonian astrology, inherited by  Hellenistic and Indian astrology, developed the zodiac of twelve signs familiar in the West. In Chinese astrology, months and years pass through a cycle of twelve animals that imply certain fortunes or misfortunes related to events occurring within those signs. The Chinese zodiac is not linked to constellations, however.
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Noun
1. a belt-shaped region in the heavens on either side to the ecliptic; divided into 12 constellations or signs for astrological purposes
(hypernym) region, part
(part-holonym) celestial sphere, sphere, empyrean, firmament, heavens, vault of heaven, welkin
(part-meronym) exaltation
2. (astrology) a circular diagram representing the 12 zodiacal constellations and showing their signs
(hypernym) diagram
(classification) astrology, star divination

n. zodiac, diagram representing the twelve zodiac signs

(n.)
An imaginary belt in the heavens, 16¡ or 18¡ broad, in the middle of which is the ecliptic, or sun's path. It comprises the twelve constellations, which one constituted, and from which were named, the twelve signs of the zodiac.
  

(n.)
A girdle; a belt.
  

(n.)
A figure representing the signs, symbols, and constellations of the zodiac.