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petrous

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petrous /pet·rous/ (pet´rus) resembling a rock; hard; stony.

pet·rous (p

t

r

s)

adj.

1. Of stony hardness.

2. Of or relating to the dense hard portion of the temporal bone that forms a protective case for the inner ear.

petrous

resembling rock or stone; stony.

petrous bone

the pars petrosa, or petrous portion of the temporal bone. See also Table 10.

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