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[fen-l-al-uh-neen, -nin, feen-] /ˌfɛn lˈæl əˌnin, -nɪn, ˌfin-/
noun, Biochemistry
a crystalline, water-soluble, essential amino acid, C 6 H 5 CH 2 CH(NH 2)COOH, necessary to the nutrition of humans and most animals, obtained chiefly from egg white or skim milk. Symbol: F.
Abbreviation: Phe;
Also called phenylaminopropionic acid
[fen-l-uh-mee-noh-proh-pee-on-ik, -am-uh-noh-, feen-, fen-l-uh-mee-noh-, -am-uh-noh-, feen-] /ˈfɛn l əˈmi noʊ proʊ piˈɒn ɪk, -ˈæm ə noʊ-, ˈfin-, ˌfɛn l əˌmi noʊ-, -ˌæm ə noʊ-, ˌfin-/ (Show IPA)
Origin of phenylalanine
1880-85; phenyl + alanine Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for phenylalanine


/ˌfiːnaɪlˈæləˌniːn; ˌfɛnɪl-/
an aromatic essential amino acid; a component of proteins
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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phenylalanine in Medicine

phenylalanine phen·yl·al·a·nine (fěn'əl-āl'ə-nēn', fē'nəl-)
Abbr. Phe
An essential amino acid that occurs as a constituent of many proteins and is normally converted to tyrosine in the body.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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phenylalanine in Science
An essential amino acid. Chemical formula: C9H11NO2. See more at amino acid.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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