Anatomy
mastoid process
mas·toid proc·ess
Subclass of:
Temporal bone
Definitions related to mastoid process:
  • (mastoid) The posterior part of the temporal bone. It is a projection of the petrous bone.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • (mastoid bone) The bone in the skull behind the ear.
    Harvard Dictionary of Health Terms
    Harvard Medical Publishing, 2011
  • A honeycombed section of bone located near the base of the skull, protruding behind the outer ear. It is connected to the middle ear.
    NCI
    U.S. National Cancer Institute, 2021
  • Mastoid process, the smooth pyramidal or cone-shaped bone projection at the base of the skull on each side of the head just below and behind the ear in humans. The mastoid process is important to students of fossil humans because it occurs regularly and in the specific form described only in h...
    Encyclopedia Britannica
    Encyclopedia Britannica, Inc., 2025
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