/ Dictionary / Index C calx: Meaning and Definition of Find definitions for: calx Pronunciation: (kalks), [key] — pl. calx•es, cal•ces the oxide or ashy substance that remains after metals, minerals, etc., have been thoroughly roasted or burned. lime (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: calx (Thesaurus) calvus calyces Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language