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

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

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.

petrous

[pet′rəs]
Etymology: L, petra, rock
resembling a rock or stone.

pet·rous

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

petrous

resembling rock or stone; stony.

petrous bone
the pars petrosa, or petrous portion of the temporal bone. See also Table 10.
References in periodicals archive ?
The petrous portion of the ICA is divided into vertical and horizontal segments that form a genu at their junction.
Aneurysms of the petrous portion of the ICA are usually discovered incidentally.
The petrous portion of the temporal bone is a pyramid-shaped structure that extends medially and anteriorly toward the central skull base.
The endolymphatic sac, located between the dura and the posterior surface of the petrous portion of the temporal bone, originates in the neuroectoderm and is lined with both columnar and simple cuboidal epithelium.
For the 225 cremated petrous portions of the temporal bone that were measured, we found that length and breadth were poorly correlated in contrast to autopsy specimens of similar size, indicating differential shrinkage along these two axes (Figure 6a).