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mastoid

Pronunciation: /ˈmastɔɪd/
Definition of mastoid

adjective

Anatomy
  • relating to the mastoid process: mastoid disease

noun

Anatomy
  • the mastoid process.
  • (mastoids) [treated as singular] informal mastoiditis: stop poking your ears out with your biro—you’ll get mastoids

Origin:

mid 18th century: via French and modern Latin from Greek mastoeidēs 'breast-shaped', from mastos 'breast'

mastoid in other Oxford dictionaries

Definition of mastoid in the US English dictionary

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