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petrosal

Pronunciation: /pɪˈtrəʊs(ə)l/

Anatomy
Definition of petrosal

noun

  • the dense part of the temporal bone at the base of the skull, surrounding the inner ear.

adjective

  • relating to or denoting the petrosal, or the nerves which pass through it.

Origin:

mid 18th century: from Latin petrosus 'stony, rocky' (from petra 'rock') + -al

petrosal in other Oxford dictionaries

Definition of petrosal in the US English dictionary

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