| 释义 |
caf·feine
\(ˈ)ka|fēn also ˈkafēə̇n\ noun
also caf·fei·na \kaˈfēnə; ˌkafēˈēnə, -ˈī-\
(-s)
Etymology: German kaffein (now usually koffein, after New Latin coffea), from kaffee coffee (from French café) + -in -ine — more at CAFé
: a feebly basic bitter crystalline compound C8H10N4O2 that occurs in coffee, tea, maté, guarana, and kola nuts, is synthesized by methylation of theobromine, and acts as a stimulant of the central nervous system and as a diuretic; 1,3,7-trimethyl-xanthine |