Definition of Plutino in English:

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Pronunciation: /plo͞oˈtēnō/

noun (plural Plutinos)

A small planetlike body orbiting the sun in the region of the Kuiper belt and in resonance with Neptune.
Example sentences
  • Pluto and its ensemble of siblings called Plutinos cross Neptune's path around the Sun.
  • It's a plutino -- an object that orbits the Sun in the same amount of time as Pluto, but is too small to be called a planet.


1990s: from the name of Pluto (because of a similar orbit) + the Italian diminutive suffix -ino.

For editors and proofreaders

Syllabification: Plu·ti·no

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