hy·​droxy·​tryp·​ta·​mine hī-ˌdräk-sē-ˈtrip-tə-ˌmēn How to pronounce hydroxytryptamine (audio)
: serotonin
usually preceded by the numeral 5

Word History

First Known Use

1949, in the meaning defined above

Time Traveler
The first known use of hydroxytryptamine was in 1949

Dictionary Entries Near hydroxytryptamine

Cite this Entry

“Hydroxytryptamine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydroxytryptamine. Accessed 19 Jul. 2024.

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