/sing kon"i deen', -din, sin-/ , n. Pharm.
a white, crystalline, slightly water-soluble, levorotatory alkaloid, C 19 H 22 N 2 O, stereoisomeric with cinchonine and similarly derived, used chiefly as a quinine substitute.
[ 1850-55; CINCHON(A) + -ID 3 + -INE 2 ]