Simple Definition of Pluto
: the object in our solar system that in the past was thought to be the planet farthest from the sun but that is no longer considered to be a planet
Full Definition of Pluto
1 : the Greek god of the underworld — compare dis
2 [New Latin] : a dwarf planet occupying an orbit that crosses the orbit of Neptune
Usage Discussion of pluto
In 2006 the International Astronomical Union defined planet in such a way as to exclude Pluto, reclassifying it instead as a dwarf planet. Although discussion of the matter continues, the change has been widely accepted.
Origin of pluto
Latin Pluton-, Pluto, from Greek Ploutōn
First Known Use: 14th century
Rhymes with pluto
PLUTO Defined for Kids
Definition of Pluto
: a celestial object that orbits the sun at an average distance of 3.7 million miles (5.9 million kilometers) and has a diameter of about 1500 miles (2300 kilometers) and is often considered one of the planets
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