Where does “Pietroasa” come from?

Pietroasa (English) comes from Romanian Pietroasa, from Romanian pietros, from Romanian piatră, from Latin petra, from Ancient Greek πέτρα — rock formation: cliff, ledge, cave, ridge; stone.

Ancestry of “Pietroasa”, step by step

Step	Language	Word	Meaning
1	Romanian	Pietroasa	—
2	Romanian	pietros	stony, full of stones; pebbly, shingly, rocky;...
3	Romanian	piatră	stone
4	Latin	petra	stone, rock
5	Ancient Greek	πέτρα	rock formation: cliff, ledge, cave, ridge; stone

Every word from Ancient Greek πέτρα →Every word from Latin petra →Every word from Romanian piatră →