from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The inner, reddish-brown portion of the adrenal glands that synthesizes, stores, and releases epinephrine and norepinephrine.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the medulla of the adrenal gland; secretes epinephrine
Sorry, no etymologies found.