renin Renillidae • renipericardial · · · Info · Definitions · Characters · · renin · · Text Latin · · Script 5 · · Length 2 · · Syllables Definitions · · · (noun) a proteolytic enzyme secreted by the kidneys; catalyzes the formation of angiotensin and thus affects blood pressure. · · Noun Definition 1 Characters · · e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072