petrosa

pe·tro·sa

, pl.

pe·tro·sae

(pe-trō'să, -sē), The petrous portion of the temporal bone. [L. fr. petra, rock]

pe·tro·sa

, pl. petrosae (pe-trō'să, -sē) The petrous portion of the temporal bone. [L. fr. petra, rock]

petrosa

(pĕ-trō′să) [L. petrosus, stony] The petrous part of the temporal bone.