codeine co·deine (kō'dēn', -dē-ĭn)
n.
An alkaloid narcotic derived from opium or morphine and used as a cough suppressant, analgesic, and hypnotic. Also called methylmorphine.
| codeine (kō'dēn') Pronunciation Key
An alkaloid narcotic derived from opium or morphine and used primarily as an analgesic and a cough suppressant. Chemical formula: C18H21NO3. |