petrous

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petrous

 [pet´rus]
resembling rock or stone; stony.

pet·rous

(pet'rŭs, pē'trŭs),
1. Of stony hardness.
2. Synonym(s): petrosal
[L. petrosus, fr. petra, a rock]

petrous

(pĕt′rəs)
adj.
1. Of, relating to, or resembling rock, especially in hardness; stony.
2. Of or relating to the very dense, hard portion of the temporal bone that forms a protective case for the inner ear.

pet·rous

(pet'rŭs)
1. Of stony hardness.
2. Synonym(s): petrosal.
[L. petrosus, fr. petra, a rock]