- 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 petr&omacron;sus, rocky, from petra, rock, from Greek petra; see per-2 in Indo-European roots.
From the Greek petra, rock.