Dictionary.com
Thesaurus.com

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

Derived 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.

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

He was about to dress and find some breakfast when the alert embedded in his mastoid bone buzzed three times; it was someone in the Project attempting to get in touch with him.

From Slate • Jan. 30, 2021

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

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "mastoid" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com