/ Thesaurus / S Synonyms of seed plant Find synonyms for: Noun1. spermatophyte, phanerogam, seed plant, vascular plant, tracheophyteusage: plant that reproduces by means of seeds not sporesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: denizen Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language