/ Thesaurus / C Synonyms of ceratopteris pteridioides Find synonyms for: Noun1. floating fern, water sprite, Ceratopteris pteridioides, aquatic fern, water fernusage: aquatic fern of tropical America often used in aquariumsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language