Dictionary.com

threonine

[ three-uh-neen, -nin ]
/ ˈθri əˌnin, -nɪn /
Save This Word!

noun Biochemistry.

an essential amino acid, CH3CHOHCH(NH2)COOH, obtained by the hydrolysis of proteins. Abbreviation: Thr; Symbol: T

QUIZZES

QUIZ YOURSELF ON THE MANY TYPES OF NOUNS

They're everywhere you turn, but can you identify the 10 types of nouns easily? This quiz will test your mettle against singular, plural, concrete, abstract, common, proper, collective, compound, countable, and uncountable nouns!
Question 1 of 7
Shoelaces, rainbow, toothpaste, and haircuts are all what type of noun?

Meet Grammar Coach

Write or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing

Meet Grammar Coach

Improve Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of threonine

1925–30; threon- (alteration of Greek erythrón, neuter of erythrós red; see erythro-) + -ine2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for threonine

threonine
/ (ˈθriːəˌniːn, -nɪn) /

noun

an essential amino acid that occurs in certain proteins

Word Origin for threonine

C20 threon-, probably from Greek eruthron, from eruthros red (see erythro-) + -ine ²
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

Medical definitions for threonine

threonine
[ thrēə-nēn′, -nĭn ]

n.

A colorless crystalline amino acid that is derived from the hydrolysis of protein and is an essential component of human nutrition.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for threonine

threonine
[ thrēə-nēn′ ]

An essential amino acid. Chemical formula: C4H9NO3. See more at amino acid.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK