Share this entry
theine Line breaks: theine
Pronunciation: /ˈθiːiːn/

Definition of theine in English:


[mass noun]
Caffeine, especially when it occurs in tea.
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:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove adverts and access premium resources