/ Thesaurus / I Synonyms of icosahedral Find synonyms for: Adjective1. icosahedralusage: of or relating to an icosahedronWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language