Definition of petrous in English:

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Pronunciation: /ˈpɛtrəs/


Another term for petrosal.
Example sentences
  • The normal course of the internal carotid artery in an adult sees the vessel enter the petrous temporal bone medial to the styloid process via the carotid canal.
  • Caudal to the temporal lobe is the petrous portion of the temporal bone and the mastoid air cells.
  • The jugular foramen, a passage between the petrous portion of the temporal bone and the jugular process of the occipital bone, may be divided into two parts by intrajugular processes.


Late Middle English: from Latin petrosus 'stony, rocky', from petra 'rock', from Greek.

For editors and proofreaders

Line breaks: pet|rous

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