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mastoid

American  
[mas-toid] / ˈmæs tɔɪd /

adjective

Anatomy.
  1. of or relating to the mastoid process.

  2. resembling a breast or nipple.


noun

  1. the mastoid process.

mastoid British  
/ ˈmæstɔɪd /

adjective

  1. shaped like a nipple or breast

  2. designating or relating to a nipple-like process of the temporal bone behind the ear

"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

noun

  1. the mastoid process

  2. 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

Other Word Forms

Etymology

Origin of mastoid

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

In part, the look of those “big eyes” was informed by a mastoid operation that permanently damaged Ms. Keane’s hearing when she was 2.

From Washington Post Jun. 29, 2022

From childhood, when a mastoid operation resulted in permanent eardrum damage and hearing loss, she had been fascinated with eyes, watching for cues to amplify what was being said.

From New York Times Jun. 28, 2022

The Hopkins researchers eventually found the genetic signature of the SARS-CoV-2 coronavirus in two of the three cadavers, confirming that the virus can make its way to the middle ear and mastoid.

From Salon Jan. 17, 2022

Figure 7.7 Temporal Bone A lateral view of the isolated temporal bone shows the squamous, mastoid, and zygomatic portions of the temporal bone.

From Textbooks Jun. 19, 2013

So far, aside from one scare—at five, Milton had nearly died from a mastoid infection— they had both been healthy.

From "Middlesex: A Novel" by Jeffrey Eugenides

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