mastoid process


noun
  1. a large, bony prominence on the base of the skull behind the ear, containing air spaces that connect with the middle ear cavity.

Origin of mastoid process

1
First recorded in 1725–35
  • Also called mastoid, mastoid bone .

Words Nearby mastoid process

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How to use mastoid process in a sentence

Scientific definitions for mastoid process

mastoid process

[ măstoid′ ]


  1. A protruding bony area in the lower part of the skull that is located behind the ear in humans and many other vertebrates and serves as a site of muscle attachment. The mastoid process contains small air-filled cavities called mastoid cells that communicate with the middle ear.

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