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from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. caffeine when present in tea

from the GNU version of the Collaborative International Dictionary of English

  • n. See caffeine. Called also theina.

from The Century Dictionary and Cyclopedia

  • n. A bitter crystallizable volatile principle (C8H10N4O2) found in tea, coffee, and some other plants, tea yielding from 2 to 4 per cent.


Sorry, no etymologies found.



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