Breadcrumb Home > Thesaurus Cite Synonyms of iridosmine Find synonyms for: Noun1. osmiridium, iridosmine, mineralusage: a hard and corrosion resistant mineral that is a natural alloy of osmium and iridium (usually containing small amounts of rhodium and platinum); used in needles and pen nibs etc.WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.See also: iridosmine (Dictionary) Related Content Daily Word Quiz: polemic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language Synonyms Index