Meaning of mastoid

mas•toid

Pronunciation: (mas'toid), [key]
— adj. Anat.
  1. of or pertaining to the mastoid process.
  2. resembling a breast or nipple.
—n.
  1. the mastoid process.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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