/ Dictionary / Index R renal: Meaning and Definition of Find definitions for: re•nal Pronunciation: (rēn'l), [key] — adj. of or pertaining to the kidneys or the surrounding regions. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: renal (Thesaurus) renaissant renal calculus Related Content Daily Word Quiz: frowzy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language