/ Thesaurus / P Synonyms of pisanosaur Find synonyms for: Noun1. pisanosaur, pisanosaurus, ornithischian, ornithischian dinosaurusage: primitive dinosaur found in ArgentinaWordNet 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