theine

American  

[thee-een, -in] / ˈθi in, -ɪn /

noun

1. caffeine, especially in tea.

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theine British  

/ ˈθiːiːn, -ɪn /

noun

1. another name for caffeine, esp when present in tea

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Etymology

Origin of theine

First recorded in 1830–40; from New Latin the(a) “tea” ( see origin at tea) + -ine ²

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Example Sentences

See Examples For:

theine

The chemical principle of tea, namely theine, was subsequently tried and produced no effect.

From Insectivorous Plants by Charles Darwin

Half-minims were placed, in each case; on the discs of at least six leaves, but no inflection was caused, except perhaps a very slight amount by the theine.

From Insectivorous Plants by Charles Darwin

They have been called cafeine and theine, respectively.

From The Atlantic Monthly, Volume 03, No. 15, January, 1859 by Various

The flavor of both is due to a principle, theine in tea, caffeine in coffee, in which both the good and the ill effects of these drinks are bound up.

From The Easiest Way in Housekeeping and Cooking Adapted to Domestic Use or Study in Classes by Helen Campbell

There is more theine or caffeine in tea leaves than in coffee.

From The Foundations of Japan Notes Made During Journeys Of 6,000 Miles In The Rural Districts As A Basis For A Sounder Knowledge Of The Japanese People by J.W. Robertson Scott

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