n. [ Cf. F. caféine. See Coffee. ] (Chem.) A white, bitter, crystallizable substance, found in coffee and tea. It is identical with the alkaloidtheine 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 ]
n. [ Cf. F. caféine. See Coffee. ] (Chem.) A white, bitter, crystallizable substance, found in coffee and tea. It is identical with the alkaloidtheine 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 ]
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