caffeine
Meaning
Noun
- An alkaloid, C8H10N4O2, found naturally in tea and coffee plants which acts as a mild stimulant on the central nervous system.
Origin
- From French caféine, from café, or German Caffein, Kaffein (cp. Coffein, Koffein), from Kaffee (cp. Kaffe, Koffee, Koffe), or Italian caffè -ine
Modern English dictionary
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