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mastoid process

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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.
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Origin of mastoid process

First recorded in 1725–35
Also called mastoid, mastoid bone.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

mastoid bone in Medicine

mastoid bone

n.
  1. mastoid process

mastoid process


mastoid bone in Science

mastoid process

[măstoid′]