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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.


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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Word History and Origins

Origin of mastoid process1

First recorded in 1725–35
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Example Sentences

(ii) If there be symptoms of inflammation of the mastoid process, or of internal-ear or of intracranial suppuration.

The object of the operation is to permit of free drainage and to prevent involvement of the mastoid process itself.

For their successful performance a knowledge of the anatomical relationships of the mastoid process is essential.

This may be necessary if the anterior wall of the antrum and mastoid process be affected.

After exposing the antrum in the ordinary way, the tip of the mastoid process is opened freely.

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mastoiditismastopathy