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[val-een, -in, vey-leen, -lin] /ˈvæl in, -ɪn, ˈveɪ lin, -lɪn/
noun, Biochemistry.
an essential amino acid, (CH 3) 2 CHCH(NH 2)COOH, white, crystalline, and water-soluble, present in most plant and animal proteins, required for growth. Symbol: V.
Abbreviation: Val;
Origin of valine
First recorded in 1910-15; val(eric) + -ine2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for valine


/ˈveɪliːn; ˈvæl-/
an essential amino acid; a component of proteins
Word Origin
C19: from val(eric acid) + -ine²
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
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valine in Medicine

valine val·ine (vāl'ēn', vā'lēn')
Abbr. Val
An essential amino acid that is a constituent of proteins, especially fibrous proteins.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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valine in Science
An essential amino acid. Chemical formula: C5H11NO2. See more at amino acid.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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