caffeine

• caffein

From French caféine,^[1] from café (“coffee”), or German Caffein, Kaffein^[2] (cp. Coffein, Koffein), from Kaffee (“coffee”) (cp. Kaffe, Koffee, Koffe), or Italian caffè (“coffee”) +‎ -ine.

• IPA^(key): /ˈkæfiːn/, /kæˈfiːn/

• Audio (US):

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• Rhymes: -æfiːn, -iːn

caffeine (usually uncountable, plural caffeines)

1. An alkaloid, C₈H₁₀N₄O₂, found naturally in tea and coffee plants, which acts as a mild stimulant on the central nervous system. [from 1830]

   Coordinate terms: guaranine, mateine, theine

•   caffeine on Wikipedia.Wikipedia

caffeine f pl

1. plural of caffeina