/ Dictionary / Index P Perseus: Meaning and Definition of Find definitions for: Per•se•us Pronunciation: (pûr'sē-us, -sys), [key] — gen. -se•i a hero, the son of Zeus and Danaë, who slew the Gorgon Medusa, and afterward saved Andromeda from a sea monster. a northern constellation between Cassiopeia and Taurus, containing the variable star Algol. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: perseus (Thesaurus) Perses Perseus cluster Related Content Daily Word Quiz: ablution Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language