petrous
adjective
- adjective Resembling rock or stone in its hardness.
- adjective (anatomy) Of the dense portion of the temporal bone that protects the inner ear.
Synonyms
Etymology
From Middle English, borrowed from Middle French petreux, from Latin petrōsus, from petra, from Ancient Greek πέτρα (pétra).
Webster’s 1913
- adjective Like stone; hard; stony; rocky; as, the petrous part of the temporal bone. Hooper.
- adjective Same as Petrosal.
Etymology [L. petrosus, fr. petra a stone.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “petrous”, CC BY-SA 4.0. Details