Definition of


  1. (noun, substance) a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects

via WordNet, Princeton University

Synonyms of Caffeine


Alternate forms of Caffeine

Hypernyms: alkaloid

Origin of the word Caffeine

  1. 1830, from Ger. Kaffein, coined by chemist F.F. Runge (1795-1867), apparently from Ger. Kaffee "coffee" + chemical suffix -ine (Ger. -in). The form of the English word may be via Fr. caf?ine. more

via Online Etymology Dictionary, ©2001 Douglas Harper

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