petrosal bone 名詞
顳骨岩部
Pe·tro·sal a. Anat. (a) Hard; stony; petrous; as, the petrosal bone; petrosal part of the temporal bone. (b) Of, pertaining to, or in the region of, the petrous, or petrosal, bone, or the corresponding part of the temporal bone.
Petrosal bone Anat., a bone corresponding to the petrous portion of the temporal bone of man; or one forming more or less of the periotic capsule.