/ Thesaurus / O Synonyms of oort Find synonyms for: Noun1. Oort, Jan Hendrix Oortusage: Dutch astronomer who proved that the galaxy is rotating and proposed the existence of the Oort cloud (1900-1992)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: philanthropy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language