Petrous
Pronunciation : Pe"trous
Part of Speech : a.
Etymology : [L. petrosus, fr. petra a stone.]
Definition : 1. Like stone; hard; stony; rocky; as, the petrous part of the temporal bone. Hooper.
2. (Anat.)
Defn: Same as Petrosal.
Source : Webster's Unabridged Dictionary, 1913