/ Thesaurus / P Synonyms of psilophyton Find synonyms for: Noun1. psilophyton, vascular plant, tracheophyteusage: any plant or fossil of the genus PsilophytonWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language