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tryptophan

From Wiktionary, the free dictionary
See also:Tryptophan

English

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EnglishWikipedia has an article on:
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Etymology

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FromGermanTryptophan, fromAncient Greekφαίνω(phaínō,to appear).

Pronunciation

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Noun

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tryptophan (countable anduncountable,pluraltryptophans)

  1. (biochemistry) Anessential amino acid with anindoleside chain; present in manyfoods, especiallychocolate,oats,banana andmilk; it is essential fornormalgrowth anddevelopment and is theprecursor ofserotonin andniacin; any specific form of this compound, or any derivative of it.
    • 1999,Matt Ridley,Genome, Harper Perennial, published2004, page169:
      The quickest way to raise serotonin levels again is to send moretryptophan into the brain, because serotonin is made fromtryptophan.
    • 2020 December 10, Anahad O’Connor, “How Foods May Affect Our Sleep”, inThe New York Times[1],→ISSN:
      Tryptophan is an amino acid found in many foods, including dairy and turkey, which is one of the reasons commonly given for why so many of us feel so sleepy after our Thanksgiving feasts.

Synonyms

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Derived terms

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Translations

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essential amino acid
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