/ Thesaurus / I Synonyms of isoetes Find synonyms for: Noun1. Isoetes, genus Isoetes, fern genususage: type and genus of the Isoetaceae and sole extant genus of the order IsoetalesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language