/ Thesaurus / Z Synonyms of zirconium silicate Find synonyms for: Noun1. zircon, zirconium silicate, mineralusage: a common mineral occurring in small crystals; chief source of zirconium; used as a refractory when opaque and as a gem when transparentWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language