n.
Pronunciation: ' k ō - ˌ d ē n
Function: noun
Etymology: French codéine, from Greek k ō deia poppyhead
Date: 1850
: a morphine derivative C 18 H 21 NO 3 ·H 2 O that is found in opium, is weaker in action than morphine, and is used especially as an analgesic and antitussive