C0359800 (sĭn′ə-bär′)n.1. A heavy reddish mercuric sulfide, HgS, that is the principal ore of mercury.2. See mercuric sulfide.3. See vermilion.[Middle English cinabare, from Latin cinnabaris, from Greek kinnabari.]cin′na·bar′ine(-bär′ĭn, -īn, -bə-rīn′) adj.EncyclopediaSeecinnabar