caffein
caffein caf*fe"in, Caffeine Caf*fe"ine, n. [Cf. F. caf['e]ine. See {Coffee}.] (Chem.) A white, bitter, crystallizable substance, found in coffee and tea. It is identical with the alkaloid {theine} from tea leaves, and with {guaranine} from guarana. It is responsible for most of the stimulating effect of coffee or tea. [1913 Webster + WordNet 1.5]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Caffein — (Coffein), s. Alkaloide …   Lexikon der gesamten Technik

  • Caffein — Caf|fe|in [frz. café (türkisch gahve = Kaffee)]: svw. ↑ Coffein …   Universal-Lexikon

  • caffein — n. caffeine, vegetable alkaloid found in coffee and tea plants, stimulant …   English contemporary dictionary

  • caffein — noun a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects • Syn: ↑caffeine • Derivationally related forms: ↑caffeinic • Hypernyms: ↑alkaloid • Substance Holonyms: ↑coffee, ↑ …   Useful english dictionary

  • caffein addiction — noun an addiction to caffein • Hypernyms: ↑drug addiction, ↑white plague …   Useful english dictionary

  • caffein addict — noun someone addicted to caffeine • Syn: ↑caffeine addict • Hypernyms: ↑addict …   Useful english dictionary

  • Caffeine — caffein caf*fe in, Caffeine Caf*fe ine, n. [Cf. F. caf[ e]ine. See {Coffee}.] (Chem.) A white, bitter, crystallizable substance, found in coffee and tea. It is identical with the alkaloid {theine} from tea leaves, and with {guaranine} from… …   The Collaborative International Dictionary of English

  • guaranine — caffein caf*fe in, Caffeine Caf*fe ine, n. [Cf. F. caf[ e]ine. See {Coffee}.] (Chem.) A white, bitter, crystallizable substance, found in coffee and tea. It is identical with the alkaloid {theine} from tea leaves, and with {guaranine} from… …   The Collaborative International Dictionary of English

  • theine — caffein caf*fe in, Caffeine Caf*fe ine, n. [Cf. F. caf[ e]ine. See {Coffee}.] (Chem.) A white, bitter, crystallizable substance, found in coffee and tea. It is identical with the alkaloid {theine} from tea leaves, and with {guaranine} from… …   The Collaborative International Dictionary of English

  • caffeinic — adjective of or containing caffein • Pertains to noun: ↑caffein • Derivationally related forms: ↑caffein * * * (ˈ)ka|fēnik, |kafē|inik adjective : of or containing caffeine …   Useful english dictionary

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