Meanings
nountheanine (countable and uncountable, plural theanines)
plural theanines
- countableuncountablechemistryamino acid commonly found in tea
Origin
Thea (“genus of tea”) + -anine
Full word history & related roots →Translations
Chinese Mandarin 茶氨酸
- 茶氨酸 (chá ān suān)amino acid
Czech teanin
- teaninamino acid
Dutch theanine
- theanineamino acid
Finnish teaniini
- teaniiniamino acid
Hungarian teanin
- teaninamino acid
Italian teanina
- teaninaamino acid
Portuguese teanina
- teaninaamino acid
Russian теанин
- теанин (teanin)amino acid
Cite this entry
APA
theanine. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/theanine
MLA
“theanine.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/theanine. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “theanine,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/theanine.
Source: theanine on Wiktionary, CC BY-SA 4.0.