follow Dictionary.com

11 Trending Words of 2014

tryptophan

[trip-tuh-fan] /ˈtrɪp təˌfæn/
noun, Biochemistry
1.
an essential amino acid, (C 8 H 6 N)CH 2 CH(NH 2)COOH, colorless, crystalline, and aromatic, released from proteins by tryptic digestion and a precursor of serotonin. Symbol: W.
Abbreviation: Trp;
Also, tryptophane
[trip-tuh-feyn] /ˈtrɪp təˌfeɪn/ (Show IPA)
.
Origin
1900-1905
1900-05; trypto- (irregular combining form representing Greek trīptós rubbed) + -phan(e)
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for tryptophane

tryptophan

/ˈtrɪptəˌfæn/
noun
1.
an essential amino acid; a component of proteins necessary for growth
Word Origin
C20: from trypt(ic) + -o + -phan variant of -phane
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
Cite This Source
Word Origin and History for tryptophane

tryptophan

n.

also tryptophane, complex amino acid, 1890, coined in German from trypto-, taken as a comb. form of tryptic "by trypsin," + Greek phainein "to appear" (see phantasm).

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
tryptophane in Medicine

tryptophan tryp·to·phan (trĭp'tə-fān') or tryp·to·phane (-fān')
n.
Abbr. Try
An essential amino acid formed from proteins during the digestive process by the action of proteolytic enzymes.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
tryptophane in Science
tryptophan
  (trĭp'tə-fān')   
An essential amino acid. Chemical formula: C11H12N2O2. See more at amino acid.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for tryptophan

Few English speakers likely know this word

Word Value for tryptophane

0
22
Scrabble Words With Friends

Nearby words for tryptophane