Pe*tro"sal (?), a. [See Petrous.]
(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.
Pe*tro"sal, n. (Anat.)
(a) A petrosal bone. (b)
The auditory capsule. Owen.