[ mas-toi-dahy-tis ]
/ ˌmæs tɔɪˈdaɪ tɪs /

noun Pathology.

inflammation of the mastoid process.

Origin of mastoiditis

First recorded in 1885–90; mastoid + -itis Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for mastoiditis

  • These sometimes become infected from the ear, causing the condition known as mastoiditis.

    Physiology|Ernest G. Martin

British Dictionary definitions for mastoiditis

/ (ˌmæstɔɪˈdaɪtɪs) /


inflammation of the mastoid process
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

Medical definitions for mastoiditis

[ măs′toi-dītĭs ]


Inflammation of the mastoid process and mastoid sinuses.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for mastoiditis

[ măs′toid-ītĭs ]

Inflammation of the mastoid process, usually resulting from an acute infection of the middle ear.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.