Definition of theine in English:


Line breaks: theine
Pronunciation: /ˈθiːiːn
, ˈθiːɪn


[mass noun]
Caffeine, especially when it occurs in tea.
More example sentences
  • Eventually it was shown that the theine of tea was identical with the caffeine of coffee, and the term theine was then dropped.
  • Analysis certificates are issued for each processed batch; these certificates also state the percentage of theine and residues still left.


mid 19th century: from modern Latin Thea (former genus name of the tea plant, from Dutch thee) + -ine4.

Definition of theine in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day bimble
Pronunciation: ˈbimbəl
walk or travel at a leisurely pace