/ Thesaurus / P Synonyms of pityrogramma argentea Find synonyms for: Noun1. silver fern, Pityrogramma argentea, fernusage: fern of southern tropical Africa having fronds with white undersidesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language