sædʒɪˈtɛəɹɪəs sædʒɪˈtɛɹɪəs type genus of the Sagittariidae the ninth sign of the zodiac; the sun is in this sign from about November 22 to December 21 a large zodiacal constellation in the Southern Hemisphere; between Scorpius and Capricornus (astrology) a person who is born while the sun is in Sagittarius