(biochemistry) A circulating enzyme released by mammalian kidneys that converts angiotensinogen to angiotensin I. Due to its activity which ultimately leads to the formation of angiotensin II and aldosterone, this hormone plays a role in maintaining blood pressure.

plural of renin

(endocrinology) A collection of hormones involved in the regulation of the body's blood pressure and water content

plural of renin-angiotensin system

(pathology) A tumour that produces renin

plural of reninoma