from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of several planetoids in the Kuiper Belt that have orbits similar to Pluto in that they have a resonance of 3:2 with that of Neptune
From Plut(o) + -ino, meaning “little Pluto” (compare neutrino); coined by David C. Jewitt et al. (Wiktionary)
Just to further muddy the waters: there is already the term “plutino,” which refers to Kuiper Belt Objects which have orbits similar to Pluto’s that is, in the same 3:2 resonance with Neptune’s orbit.