Breadcrumb Home > Dictionary > Index T Cite threonine: Meaning and Definition of Find definitions for: thre•o•nine Pronunciation: (thrē'u-nēn", -nin), [key] — n. Biochem. an essential amino acid, CHCHOHCH(NH)COOH, obtained by the hydrolysis of proteins. Abbr.: Thr; Symbol: T Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: threonine (Thesaurus) threnody thresh TrendingHere are the facts and trivia that people are buzzing about. January 2021 Current Events: US News The Holocaust (1933–1945) Chinese New Year History, Meaning, and Celebrations Noble Titles and Ranks in a Monarchy The 5 Best Air Purifiers of 2020 Inaugural Trivia Related Content Daily Word Quiz: subrosa Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language