Definify.com
Webster 1913 Edition
Codeine
Co′deine
(kō′dēn or kō̍-dē′ĭn)
, Noun.
[Gr.
κώδεια
poppy head: cf. F. codéine
.] (Chem.)
One of the opium alkaloids; a white crystalline substance,
C18H21NO3
, similar to and regarded as a derivative of morphine, but much feebler in its action; – called also codeia
.