mastoid process

noun

Medical Definition of mastoid process

: the process of the temporal bone behind the ear that is well developed and of somewhat conical form in adults but inconspicuous in children

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“Mastoid process.” The Merriam-Webster.com Medical Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/medical/mastoid%20process. Accessed 24 January 2020.

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