petrous
/ˈpɛtrəs/
adjective
- Relating to or resembling rock; hard and stony.
- The old castle was built on a petrous foundation that had lasted for centuries.
- The petrous surface of the cliff was impossible to climb without equipment.
- Geologists studied the petrous layers of the ancient mountain range.
- Relating to the dense, hard part of the temporal bone in the skull.
- The surgeon carefully avoided the petrous region during the operation.
- The petrous part of the temporal bone protects the inner ear.
- A fracture of the petrous bone can cause hearing loss.
Antonyms