theine

[thee-een, -in]

noun

1. caffeine, especially in tea.

theine

/ ˈθiːiːn, -ɪn /

noun

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

Word History and Origins

Origin of theine¹

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

Word History and Origins

Origin of theine¹

C19: from New Latin thea tea + _-ine ²

Example Sentences

Theine retired young and initially handed her retirement money to a broker.

Read more on Seattle Times

Theine, thē′in, n. a bitter crystallisable volatile principle found in tea.—ns.

Read more on Project Gutenberg

Theobrō′mine, an alkaloid principle, similar to theine and caffeine, existing in the chocolate nut.

Read more on Project Gutenberg

The properties of guarana as a nervous stimulant and restorative are due to the presence of what was originally described as a new principle and termed guaranine, but is now known to be identical with caffeine or theine.

Read more on Project Gutenberg

It is a suggestive fact that it contains the same principle which is found in both tea and coffee and is called theine or caffeine.”

Read more on Scientific American