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alkaloid present in opium, 1838, from French codéine, coined, with chemical suffix -ine (2), from Greek kodeia "poppy head," related to kooz "prison," literally "hollow place;" kodon "bell, mouth of a trumpet;" koilos "hollow," from PIE root *kel- (see cell). Originally codeina; modern form is from 1881.
codeine co·deine (kō'dēn', -dē-ĭn)
An alkaloid narcotic derived from opium or morphine and used as a cough suppressant, analgesic, and hypnotic. Also called methylmorphine.