Zodiac is the twelve astrological signs each named for a constellation.
An example of a zodiac is Aquarius or Aries.
See zodiac in Webster's New World College Dictionary
Origin: ME zodiak < MFr zodiaque < L zodiacus, zodiac < Gr zōdiakos (kyklos), zodiac (circle), lit., circle of animals < zōidion, dim. of zōion, animal: see bio-
See zodiac in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Old French zodiaque
Origin: , from Latin zōdiacus
Origin: , from Greek zōidiakos (kuklos), (circle) of the zodiac
Origin: , from zōidion, small represented figure, zodiacal sign
Origin: , diminutive of zōion, living being; see zoon1.
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