1. A large asteroid that was once thought to be the farthest known planet from the sun; it has an elliptical orbit
   "Pluto was discovered by Clyde Tombaugh in 1930"
    
2. (Roman mythology) god of the underworld; counterpart of Greek Hades
   - Dis, Dis Pater, Orcus
    
3. A cartoon character created by Walt Disney, a red-coloured, medium-sized, short-haired dog with black ears

Derived forms: Plutos

Type of: asteroid, character, fictional character, fictitious character, Roman deity

Part of: solar system

Encyclopedia: Pluto, West Virginia