plu·toid  (plōō'toid')  n. A dwarf planet that orbits the sun at a greater distance on average than Neptune. [Pluto + -oid.] |
| Main Entry: | plutoid |
| Part of Speech: | n |
| Definition: | a celestial body which orbits the Sun but is further from it than Neptune; designated by the International Astronomical Union to refer to Pluto and similar space objects |
| Example: | A plutoid shares its orbit with other objects and is somewhat spherical. |
| Etymology: | 2006 |