Meaning of Plutino in English:

Plutino

Pronunciation /pluːˈtiːnəʊ/

noun

  • A small planet-like body orbiting the sun in the region of the Kuiper belt and in resonance with Neptune.

    ‘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 they have a similar orbit) + the Italian diminutive suffix -ino.