from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A hormone secreted by or acting on a part of the nervous system.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any hormone that stimulates the nervous system
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a hormone that is released by nerve impulses (e.g., norepinephrine or vasopressin)
neuro- + hormone (Wiktionary)