petrous Meaning, Definition & Usage

  1. adjective satellite (of bone especially the temporal bone) resembling stone in hardness
    stonelike.

WordNet

Pe"trous adjective
Etymology
L. petrosus, fr. petra a stone.
Definitions
  1. Like stone; hard; stony; rocky; as, the petrous part of the temporal bone. Hooper.
  2. (Anat.) Same as Petrosal.

Webster 1913