1. a cartoon character created by Walt Disney • Instance Hypernyms: fictional character, fictitious character, character 2.(Greek mythology) the god of the underworld in ancient mythology; brother of Zeus and husband of Persephone • Syn: Hades, Aides, Aidoneus • Derivationally related forms: Hadean (for: Hades) • Topics: Greek mythology • Instance Hypernyms: Greek deity 3. a small planet and the farthest known planet from the sun; it has the most elliptical orbit of all the planets - Pluto was discovered by Clyde Tombaugh in 1930 • Instance Hypernyms: superior planet, outer planet • Member Holonyms: solar system