tryptophan
See also: Tryptophan
English
Etymology
From German Tryptophan (“tryptic”) + Ancient Greek φαίνω (phaínō, “to appear”).
Pronunciation
- Lua error in Module:parameters at line 331: Parameter 1 should be a valid language or etymology language code; the value "UK" is not valid. See WT:LOL and WT:LOL/E. IPA(key): /ˈtɹɪptə(ʊ)fan/
Noun
tryptophan (countable and uncountable, plural tryptophans)
- (biochemistry) An essential amino acid having an indole side chain; it is present in many foods, especially chocolate, oats, bananas and milk; it is essential for normal growth and development and is the precursor of serotonin and niacin; any specific form of this compound, or any derivative of it.
- 1999, Matt Ridley, Genome, Harper Perennial 2004, p. 169:
- The quickest way to raise serotonin levels again is to send more tryptophan into the brain, because serotonin is made from tryptophan.
- 1999, Matt Ridley, Genome, Harper Perennial 2004, p. 169:
Synonyms
Derived terms
Translations
essential amino acid
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