Theine
//ˈθiː.iːn//
"Theine" in a Sentence (3 examples)
There is theine in tea, and caffeine in coffee.
Tea contains theine and coffee contains caffeine.
Caffeine is called guaranine when found in guarana, mateine when found in mate and theine when found in tea. There is far more caffeine in coffees than in teas.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.