The Collaborative International Dictionary
Petrosal bone
Petrosal \Pe*tro"sal\, a. [See Petrous.] (Anat.)
Hard; stony; petrous; as, the petrosal bone; petrosal part of the temporal bone.
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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.
Usage examples of "petrosal bone".
It was high up, on the right side of his head, in the temple, but back rather far, almost far enough to drive the petrosal bone through the brain.