Definition of zodiac

  1. zodiac Noun The belt-like region of the celestial sphere approximately eight degrees north and south of the ecliptic, which thousands of years ago included the apparent path of the sun, moon, and planets.
  2. zodiac Noun The twelve equal divisions of the astrological zodiacal region into signs, or houses, of the zodiac, each sign named after a constellation in this region.
  3. zodiac Noun The belt-like region of the celestial sphere corresponding to the apparent path of the sun over the course of a year, the ecliptic.
  4. zodiac Noun A circle decorated with the signs of the zodiac.
  5. zodiac Noun Any of various astrological systems considered similar to the above.
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