RENAL Meaning of RENAL in English /reen"l/ , adj.of or pertaining to the kidneys or the surrounding regions. [ 1650-60; renalis, equiv. to L ren ( es ) kidneys (pl.) + -alis -AL 1 ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012