Of Latin and/or Greek origin.
Polish and Romanian form of the name Rosalia.
Derives from “rosa” meaning the flower rose.
From Ancient Greek word “ῥόδον”, “rodon”, Aeolic “wrodon”, meaning the flower rose, which is associated with the Persian word “wŗda” of the same meaning.
It was transferred into Latin and Italian word “rosa”. In English rose was used as a color name since 1520.
During the Roman Empire the “Rosalia”, a festival inspired by roses, was celebrated in several locations, usually in May.