noun
plutoid; ice dwarf
An astronomical term for a dwarf planet beyond Neptune's orbit, similar to Pluto. Used in scientific contexts.
冥王星型天体は、海王星の外側を公転する準惑星の一種です。
Plutoids are a type of dwarf planet that orbit beyond Neptune.
Compound of 冥王星 (Pluto) + 型 (type) + 天体 (celestial body), literally 'Pluto-type celestial body'. Coined as a translation of the English term 'plutoid'.