| Part of Speech | Definition | |
| Noun | 1. A neurotransmitter involved in e.g. sleep and depression and memory.[Wordnet]. | |
Source: WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. | Top | |
Specialty Definition: 5-hydroxytryptamine
| Domain | Definition | ||
| Religion | A hormone found in the brain, platelets, digestive tract, and pineal gland. It acts both as a neurotransmitter (a substance that nerves use to send messages to one another) and a vasoconstrictor (a substance that causes blood vessels to narrow). A lack of 5-hydroxytryptamine in the brain is thought to be a cause of depression. Also called serotonin. (references) | ||
Source: compiled by the editor from various references; see credits. | Top | ||
