英语词汇“caffeine”的英英意思、用法、释义、翻译、读音、例句、短语、词组、英语词典-本地帮

单词

caffeine

释义

caffeine Chem.|ˈkæfiːn, formerly ˈkæfiːaɪn|
[ad. F. caféine, f. café coffee + -ine; see prec.]
A vegetable alkaloid crystallizing in white silky needles, found in the leaves and seeds of the coffee and tea plants, the leaves of guarana, maté, etc.
1830Lindley Nat. Syst. Bot. 206 Coffee is..supposed to owe its characters to a peculiar chemical principle called Caffein.1863Watts Dict. Chem. I. 707 Caffeine was discovered in coffee by Runge in the year 1820. Oudry, in 1827, found in tea a crystalline substance which he called theine, supposing it to be a distinct compound; but Jobat showed that it was identical with caffeine.1869Daily News 22 July, A piece of kaffeine, of the size of a breakfast plate, produced from 120 pounds of coffee.
So ˈcaffeinism = caffeism.
1889in Cent. Dict.

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