Per″se‐us (?), n. [L., from Gr. Περσεύσ.] 1. (Class. Myth.) A Grecian legendary hero, son of Jupiter and Danaë, who slew the Gorgon Medusa.
2. (Astron.) A consellation of the northern hemisphere, near Taurus and Cassiopea. It contains a star cluster visible to the naked eye as a nebula.