/koh"deen/ , n. Pharm.
a white, crystalline, slightly bitter alkaloid, C 18 H 21 NO 3 , obtained from opium, used in medicine chiefly as an analgesic or sedative and to inhibit coughing.
Also, codeia /koh dee"euh/ , codeina /koh'dee ee"neuh/ .
[ 1830-40; kóde ( ia ) head, poppy-head + -INE 2 ]