codeine

codeine
/koh"deen/, n. Pharm.
a white, crystalline, slightly bitter alkaloid, C18H21NO3, obtained from opium, used in medicine chiefly as an analgesic or sedative and to inhibit coughing.
Also, codeia /koh dee"euh/, codeina /koh'dee ee"neuh/.
[1830-40; < Gk kóde(ia) head, poppy-head + -INE2]

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Heterocyclic compound, a naturally occurring alkaloid found in opium, used in medicine as a cough suppressant and analgesic drug.

It exerts its effects by acting on the central nervous system (brain and spinal cord). Chemically it is methylmorphine, the methyl ether of morphine, an alkaloid of the phenanthrene type; its action is weaker than that of morphine, and it is less likely to lead to drug addiction.

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▪ drug
also called  methylmorphine 

      naturally occurring alkaloid of opium, the dried milky exudate of the unripe seed capsule of the poppy Papaver somniferum, that is used in medicine as a cough suppressant and analgesic drug. Codeine exerts its effects by acting on the central nervous system (nervous system, human) (brain and spinal cord). First isolated by French chemist Pierre-Jean Robiquet in 1832, codeine may be extracted directly from opium, but most codeine is produced from morphine, another opium derivative. Because of its narcotic effects, the distribution of the drug is controlled by various governmental agencies.

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Universalium. 2010.

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Look at other dictionaries:

  • Codéine — Général Nom IUPAC (5R,6S) 7,8 didehydro 4,5 époxy 3 méthoxy N méthylmorphinan 6 ol No CA …   Wikipédia en Français

  • Codeine — Codéine Codéine Général Nom IUPAC 5R,6S) 7,8 didehydro 4,5 époxy 3 méthoxy N méthylmorphinan 6 ol No CAS …   Wikipédia en Français

  • Codéïne — Codéine Codéine Général Nom IUPAC 5R,6S) 7,8 didehydro 4,5 époxy 3 méthoxy N méthylmorphinan 6 ol No CAS …   Wikipédia en Français

  • CODÉINE — Alcaloïde naturel constituant de l’opium, la codéine, ou méthylmorphine, dérive de la morphine par méthylation. Elle est utilisée en médecine comme anti tussif et comme analgésique, mais cette dernière action est six à sept fois plus faible que… …   Encyclopédie Universelle

  • codeine — alkaloid present in opium, 1838, from Fr. codéine, coined, with chemical suffix INE (Cf. ine) (2), from Gk. kodeia poppy head, related to kooz prison, lit. hollow place; kodon bell, mouth of a trumpet; koilos hollow, from PIE root *kel (see CEL …   Etymology dictionary

  • Codeine — Co*de ine, n. [Gr. ? poppy head: cf. F. cod?ine.] (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}. [1913… …   The Collaborative International Dictionary of English

  • codeine — ► NOUN ▪ a sleep inducing and painkilling drug derived from morphine. ORIGIN from Greek k deia poppy head …   English terms dictionary

  • codeine — [kō dē′əkō′dēn΄] n. [< Gr kōdeia, poppy head + INE3] a narcotic alkaloid, C18H21NO3·H2O, derived from opium and resembling morphine, but less habit forming: used in cough medicines and to relieve pain: also codein or codeia [kō dē′ə] …   English World dictionary

  • Codeine — For other uses, see Codeine (disambiguation). Codeine Systematic (IUPAC) name (5α,6α) 7,8 didehydro 4,5 epoxy 3 methoxy 17 methylmorphinan 6 ol Cli …   Wikipedia

  • codeine — A drug made from opium or morphine that is used to relieve pain and to prevent coughing and diarrhea. Codeine is a type of opiate. Also called codeine phosphate …   English dictionary of cancer terms

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