from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A conical protuberance of the posterior portion of the temporal bone that is situated behind the ear in humans and many other vertebrates and serves as a site of muscle attachment. Also called mastoid bone.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The conical, nipple-like projection of the petrous part of the temporal bone, that is situated behind the ear in humans and many other vertebrates, and serves as a site of muscle attachment.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. process of the temporal bone behind the ear at the base of the skull
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