Petrous

pet·rous [pe-truh s, pee-]
adjective
1. of or resembling stone or rock in hardness.
2. Anatomy. relating to the dense portion of the temporal bone, which protects the inner ear; petrosal.
==Origin==
1350-1400; Middle English (< Middle French petros) < Latin petrōsus rocky. See petr-, -ous
==Synonyms==
1. jagged, rough, rocky.
==Antonyms==
1. smooth, even.
Category:P
Category:Adjectives