/ Dictionary / Index K kidney stone: Meaning and Definition of Find definitions for: kid'ney stone" Pronunciation: [key] — Pathol. Pathol. an abnormal stone, or concretion, composed primarily of oxalates and phosphates, found in the kidney. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. kidney-shaped kidney vetch Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language