/ Thesaurus / H Synonyms of hystricomorpha Find synonyms for: Noun1. Hystricomorpha, suborder Hystricomorpha, animal orderusage: an order of rodents including: porcupines; guinea pigs; chinchillas; etc.WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language