zodiac UK /ˈzəʊ.dɪˌæk/US /ˈzoʊ.diˌæk/ noun7 •The belt-like region of the celestial sphere, approximately eight degrees north and south of the ecliptic, which includes the apparent path of the sun, moon, and visible planets. •The twelve equal divisions of the zodiacal region into signs or houses, each named for a prominent constellation in the region. •The Chinese zodiac. •Any of various astrological systems considered similar to the above.He is so pictured in the ancient Denderah Zodiac, where we see a man coming forth pointing to the three bright stars (Rigel, Bellatrix, and Betelguez) as his. — 1893 •The ecliptic: the belt-like region of the celestial sphere corresponding to the apparent path of the sun over the course of a year. •A inflatable boat. •A circle decorated with the signs of the zodiac. formszodiacs