/ Thesaurus / O Synonyms of ophioglossum pendulum Find synonyms for: Noun1. ribbon fern, Ophioglossum pendulum, adder's tongue, adder's tongue fernusage: epiphytic fern with straplike usually twisted fronds of tropical Asia and Polynesia and AmericaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language