caffeinen.

Brit.

/ˈkafiːn/, U.S.

/kæˈfin/,

/ˈkæˌfin/

Etymology: < French caféine, < café coffee + -ine suffix⁵; see caffeinated adj.

Chemistry.

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.

ΘΚΠ

the world > matter > chemistry > organic chemistry > alkaloids > [noun] > caffeine

caffeine1830

theine1838

1830 J. Lindley Introd. Nat. Syst. Bot. 206 Coffee is..supposed to owe its characters to a peculiar chemical principle called Caffein.

1863 H. Watts 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.

1869 Daily News 22 July A piece of kaffeine, of the size of a breakfast plate, produced from 120 pounds of coffee.

Derivatives

ˈcaffeinism n. = caffeism n.

ΘΚΠ

the world > health and disease > ill health > a disease > disorders caused by poisons > [noun] > by drugs

alcoholism1848

quinism1851

narcotization1853

cinchonism1857

bromism1867

atropinism1876

atropinization1880

bromization1881

caffeism1886

caffeinism1889

nicotinism1892

nicotism1899

1889 in Cent. Dict.

Draft additions October 2009

caffeine-free adj. (of a drink) containing no caffeine; decaffeinated.

ΚΠ

1903 Proc. Sect. Sci. Koninkl. Akad. van Wetensch. Amsterdam 6 207 On testing tea leaves which had turned yellow and would fall at the merest touch, it appeared that they were quite caffeine-free.

1908 Amer. Food Jrnl. 15 Nov. 14/2 The patented process of manufacturing the caffeine-free coffee.

1993 Spy (N.Y.) Feb. 42/2 Somebody will get him a caffeine-free Diet Coke.

This entry has not yet been fully updated (first published 1888; most recently modified version published online December 2021).

单词	caffeine
释义	caffeinen. Brit. /ˈkafiːn/, U.S. /kæˈfin/, /ˈkæˌfin/ Etymology: < French caféine, < café coffee + -ine suffix⁵; see caffeinated adj. Chemistry. 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. ΘΚΠ the world > matter > chemistry > organic chemistry > alkaloids > [noun] > caffeine caffeine1830 theine1838 1830 J. Lindley Introd. Nat. Syst. Bot. 206 Coffee is..supposed to owe its characters to a peculiar chemical principle called Caffein. 1863 H. Watts 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. 1869 Daily News 22 July A piece of kaffeine, of the size of a breakfast plate, produced from 120 pounds of coffee. Derivatives ˈcaffeinism n. = caffeism n. ΘΚΠ the world > health and disease > ill health > a disease > disorders caused by poisons > [noun] > by drugs alcoholism1848 quinism1851 narcotization1853 cinchonism1857 bromism1867 atropinism1876 atropinization1880 bromization1881 caffeism1886 caffeinism1889 nicotinism1892 nicotism1899 1889 in Cent. Dict. Draft additions October 2009 caffeine-free adj. (of a drink) containing no caffeine; decaffeinated. ΚΠ 1903 Proc. Sect. Sci. Koninkl. Akad. van Wetensch. Amsterdam 6 207 On testing tea leaves which had turned yellow and would fall at the merest touch, it appeared that they were quite caffeine-free. 1908 Amer. Food Jrnl. 15 Nov. 14/2 The patented process of manufacturing the caffeine-free coffee. 1993 Spy (N.Y.) Feb. 42/2 Somebody will get him a caffeine-free Diet Coke. This entry has not yet been fully updated (first published 1888; most recently modified version published online December 2021). < n.1830
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