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theine

[thee-een, -in] /ˈθi in, -ɪn/
noun
1.
caffeine, especially in tea.
Origin of theine
1830-1840
1830-40; < New Latin the(a) tea + -ine2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for theine

theine

/ˈθiːiːn; -ɪn/
noun
1.
another name for caffeine, esp when present in tea
Word Origin
C19: from New Latin thea tea + -ine²
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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9
9
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