Breadcrumb Home > Thesaurus > M Synonyms of mastoid Find synonyms for: Noun 1. mastoid, mastoid process, mastoid bone, mastoidal, process, outgrowth, appendage usage: process of the temporal bone behind the ear at the base of the skull Adjective 1. mastoid usage: of or relating to or in the region of the mastoid process 2. mastoid, mastoidal usage: relating to or resembling a nipple WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of mastoid (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: antebellum Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language