mastoid

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mastoid

1. shaped like a nipple or breast
2. designating or relating to a nipple-like process of the temporal bone behind the ear
3. the mastoid process
4. Informal mastoiditis
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

mastoid

[′ma‚stȯid]
(anatomy)
Breast-shaped.
The portion of the temporal bone where the mastoid process is located.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.