renal insufficiency renal failure • renal lithiasis · · · Info · Definitions · Characters · · renal insufficiency · · Text Common · · Latin · · Scripts 19 · · Length 7 · · Syllables Definitions · · · (noun) insufficient excretion of wastes by the kidneys. Synonyms: renal insufficiency. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 f latin small letter f U+0066 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075 y latin small letter y U+0079