trilingual Syllabification: (tri·lin·gual)Pronunciation: /trīˈliNGgwəl/Translate trilingual | into German Definition of trilingual adjective (of a person) speaking three languages fluently. (of a text or an activity) written or conducted in three languages:trilingual magazines in Chinese, Indonesian, and EnglishDerivatives trilingualismPronunciation: /-ˌlizəm/ noun Origin: mid 19th century: from tri- 'three' + Latin lingua 'tongue' + -altrilingual in other Oxford dictionaries Definition of trilingual in the British & World English dictionary