noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The neurotransmitter serotonin. uncountable
2. 2
   a neurotransmitter involved in e.g. sleep and depression and memory wordnet

Synonyms

All synonyms

5-htserotonin

Etymology

It is a tryptamine with a hydroxyl group attached to the carbon atom that is numbered as 5.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.