01 a. Hard; stony; petrous; as, the petrosal bone; petrosal part of the temporal bone.
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1.
Hard; stony; petrous; as, the petrosal bone; petrosal part of the temporal bone.(Anat.)
Phrases & compounds
Petrosal bone —
a bone corresponding to the petrous portion of the temporal bone of man; or one forming more or less of the periotic capsule.