/ Thesaurus / K Synonyms of kuiper belt Find synonyms for: Noun1. Kuiper belt, Edgeworth-Kuiper belt, region, partusage: a disk-shaped region of minor planets outside the orbit of NeptuneWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language