Definition of codeine
: a morphine derivative C18H21NO3·H2O that is found in opium, is weaker in action than morphine, and is used especially as an analgesic and antitussive
Recent Examples of codeine from the Web
According to a copy of the autopsy report from the Hillsborough County Medical Examiner's office in Tampa, Florida, O'Neill died of intoxication from a mixture of methadone, codeine, Valium and an antihistamine.
The US Drug Enforcement Administration says opium poppy is a source for codeine, heroin, morphine and other narcotics.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'codeine'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of codeine
French codéine, from Greek kōdeia poppyhead
First Known Use: 1850See Words from the same year
CODEINE Defined for English Language Learners
Definition of codeine for English Language Learners
: a drug used to reduce pain
Medical Definition of codeine
: a morphine derivative that is found in opium, is weaker in action than morphine, and is used chiefly in the form of its sulfate (C18H21NO3)2·H2SO4 or phosphate C18H21NO3·H3PO4 especially as a pain reliever and cough suppressant Although codeine is potentially addicting, it rarely causes physical dependence when taken orally for a short time.—Consumer Reports, February l983
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