/ Thesaurus / C Synonyms of calcedony Find synonyms for: Noun1. chalcedony, calcedony, quartz, transparent gemusage: a milky or greyish translucent to transparent quartzWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reluctant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language