Meanings
nounhydroxytryptophan (plural hydroxytryptophans)
plural hydroxytryptophans
- biochemistryA hydroxy derivative of tryptophan; especially 5-hydroxytryptophan which is a precursor to the neurotransmitter serotonin
Origin
- Proto-Indo-European*wed-
- Proto-Indo-European*wódr̥
- Proto-Hellenic*údōr
- Ancient Greekῡ̆̔́δωρ (hū̆́dōr)
- Ancient Greekὑδρο- (hudro-)
- Frenchhydro-
- Proto-Indo-European*ǵenh₁-
- Proto-Indo-European*ǵénh₁os
- Proto-Hellenic*génos
- Ancient Greekγένος (génos)
- Frenchhydrogène
- Englishhydrogen
- Proto-Indo-European*h₂eḱ-der.?
- Ancient Greekὀξύς (oxús)
- Ancient Greekγένος (génos)
- Frenchoxygène
- Englishoxygen
- Proto-Indo-European*swel-der.?
- Ancient Greekῡ̔́λη (hū́lē)
- Englishhydroxyl
- Englishhydroxy-
- GermanTryptophan
- Englishtryptophan
- Englishhydroxytryptophan
From hydroxy- + tryptophan.
Full word history & related roots →Translations
Bulgarian хидрокситриптофан
- хидрокситриптофан (hidroksitriptofan)hydroxy derivative of tryptophan
Czech hydroxytryptofan
- hydroxytryptofanhydroxy derivative of tryptophan
Cite this entry
APA
hydroxytryptophan. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/hydroxytryptophan
MLA
“hydroxytryptophan.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/hydroxytryptophan. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “hydroxytryptophan,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/hydroxytryptophan.
Source: hydroxytryptophan on Wiktionary, CC BY-SA 4.0.