/ Dictionary / Index N nephro-: Meaning and Definition of Find definitions for: nephro- Pronunciation: [key] a combining form meaning “kidney,” used in the formation of compound words: nephrolith. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nephritis nephrolith Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language