Dictionary Home »
Dictionary Definitions » Pluto
Pluto
noun
- Gr. & Rom. Myth. the god ruling over the lower world: also called Hades by the Greeks and Dis or Orcus by the Romans
- the smallest planet of the solar system and the ninth in average distance from the sun: diameter, c. 2,270 km (c. 1,410 mi); period of revolution, c. 248.59 earth years; period of rotation (retrograde), 6.39 earth days; one satellite; symbol, ♇
See Pluto in American Heritage Dictionary 4
Learn more about Pluto
Related Articles
link/cite print suggestion box