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

Coffee contains caffein, a principle identical with theine and a modified form of tannin, though in less quantity than tea.

From Science in the Kitchen. by Mrs. E. E. Kellogg

Good black tea contains of theine from 2.00 to 2.13 per cent.

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

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

It belongs to the holly family, but contains a bitter principle similar to, if not identical with, theine, or the alkaloid found in tea and coffee.”

From The Western World Picturesque Sketches of Nature and Natural History in North and South America by William Henry Giles Kingston

The berries contain theine; so also do the leaves, and in some countries the latter are preferred.

From Catalogue of Economic Plants in the Collection of the U. S. Department of Agriculture by William Saunders

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