theine
/ˈθiːiːn
/ /ˈθiːɪn /noun [mass noun]
Caffeine, especially when it occurs in tea.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.
Origin
Mid 19th century: from modern Latin Thea (former genus name of the tea plant, from Dutch thee) + -ine4.