/ Thesaurus / P Synonyms of prairie sunflower Find synonyms for: Noun1. prairie sunflower, Helianthus petiolaris, sunflower, helianthususage: similar to the common sunflower with slender usually branching stems common in central United StatesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language