/ Thesaurus / O Synonyms of oryzomys palustris Find synonyms for: Noun1. rice rat, Oryzomys palustris, ratusage: hardy agile rat of grassy marshes of Mexico and the southeastern United StatesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language