mastoid

[ mas-toid ]
/ ˈmæs tɔɪd /

adjective Anatomy.

of or relating to the mastoid process.
resembling a breast or nipple.

noun

Origin of mastoid

1725–35; < New Latin mastoīdēs < Greek mastoeidḗs. See masto-, -oid

Related forms

in·ter·mas·toid, adjectivepost·mas·toid, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for mastoid

British Dictionary definitions for mastoid

mastoid

/ (ˈmæstɔɪd) /

adjective

shaped like a nipple or breast
designating or relating to a nipple-like process of the temporal bone behind the ear

noun

the mastoid process
informal mastoiditis
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for mastoid

mastoid

[ măstoid′ ]

n.

The mastoid process.

adj.

Of or relating to the mastoid process, antrum, or sinuses.
Shaped like a breast or nipple.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.