diabetes mellitus

Definition of diabetes mellitus
National Cancer Institute

diabetes mellitus

(dy-uh-BEE-teez MEH-lih-tus)
A disease in which the body does not control the amount of glucose (a type of sugar) in the blood and the kidneys make a large amount of urine. This disease occurs when the body does not make enough insulin or does not use it the way it should.

Source: NCI Dictionary of Cancer Terms