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Dictionary Definition

caffeine n : a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects [syn: caffein]

User Contributed Dictionary

English

Etymology

French caféine, from café 'coffee'.

Pronunciation

/ˈkæfiːn/ or

Noun

caffeine

An alkaloid, C8H10N4O2, found naturally in tea and coffee plants which acts as a mild stimulant of the central nervous system.

Translations

Croatian: kofein
Czech: kofein
Korean: 카페인
Portuguese: cafeína
Swedish: koffein

Italian

Noun

caffeine

Plural of caffeina

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