- of or like rock; hard; stony
Origin of petrousML petrosus designating or of that part of the temporal bone which surrounds and protects the internal ear
Origin of petrousClassical Latin petrosus, rocky from petra, rock from Classical Greek
- Of, relating to, or resembling rock, especially in hardness; stony.
- Of or relating to the very dense, hard portion of the temporal bone that forms a protective case for the inner ear.
Origin of petrousMiddle English from Old French petros from Latin petrōsus rocky from petra rock from Greek petrā ; see per-2 in Indo-European roots.
From the Greek petra, rock.