noun
Kuiper belt
Astronomical term for the region of the solar system beyond Neptune containing many small icy bodies.
冥王星はカイパーベルトにある準惑星の一つです。
Pluto is one of the dwarf planets in the Kuiper belt.
Variant with interpunct; less common in running text.
From English 'Kuiper belt', named after astronomer Gerard Kuiper.