Breadcrumb Home > Thesaurus > P Synonyms of petrified forest national park Find synonyms for: Noun1. Petrified Forest National Parkusage: a national park in Arizona having the world's largest collection of petrified coniferous treesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. ✖ Related Content Daily Word Quiz: legerdemain Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language