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[al-uh-neen, -nin] /ˈæl əˌnin, -nɪn/
noun, Biochemistry.
any of several isomers of a colorless, crystalline, water-soluble amino acid, CH 3 CH(NH 2)COOH, found in many proteins and produced synthetically: used chiefly in biochemical research. Symbol: A.
Abbreviation: Ala;
Origin of alanine
1860-65; al(dehyde) + -an- (arbitrarily inserted) + -ine2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for alanine


/ˈæləˌniːn; -ˌnaɪn/
a nonessential aliphatic amino acid that occurs in many proteins
Word Origin
C19: from German Alanin, from al(dehyde) + -an- (euphonic infix) + -in-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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alanine in Medicine

alanine al·a·nine (āl'ə-nēn')
Abbr. Ala
A crystalline amino acid that is a constituent of many 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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alanine in Science
A nonessential amino acid. Chemical formula: C3H7NO2. See more at amino acid.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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