Definition of Plutino in English:

Plutino

Syllabification: Plu·ti·no
Pronunciation: /plo͞oˈtēnō
 
/

noun (plural Plutinos)

  • A small planetlike body orbiting the sun in the region of the Kuiper belt and in resonance with Neptune.
    More 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.

Origin

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

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