trilingual [trahy-ling-gwuh l or, Canadian, -ling-gyoo-uh l] EXAMPLES|WORD ORIGIN adjective using, speaking, or involving three languages. Liberaldictionary.com
Origin of trilingual 1825–35; Latin trilingu(is) triple-tongued + -al1. See tri-, lingual Related formstri·lin·gual·ism, nountri·lin·gual·ly, adverb Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019 Examples from the Web for trilingual Historical Examples of trilingual
It is probable that there was actual diversity in the trilingual versions.
James Edward Talmage
It is trilingual–viz., Chinese, Uighur, and runic or Yenissei characters.
The American Journal of Archaeology, 1893-1
Various
The first clue to these questions was, as in the parallel case of Egypt, afforded by a trilingual inscription.
Samuel Laing
He wandered about Europe, became bilingual, if not trilingual (he was never quite happy in German speech or German philosophy).
John Albert Macy
The next problem in the study of cuneiform was the decipherment of the second language in each of the trilingual groups.
Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8
Various
British Dictionary definitions for trilingual trilingual adjective able to speak three languages fluently expressed or written in three languages Derived Formstrilingualism, nountrilingually, adverb Collins English Dictionary – Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Word Origin and History for trilingual adj.
1834, from tri- + Latin lingua “language,” literally “tongue” (see lingual).
Online Etymology Dictionary, © 2010 Douglas Harper