mellitus Definition

a variable disorder of carbohydrate metabolism caused by a combination of hereditary and environmental factors and usually characterized by inadequate secretion or utilization of insulin, by excessive urine production, by excessive amounts of sugar in the blood and urine, and by thirst, hunger, and loss of weight

type 1 diabetes —abbreviation IDDM

type 2 diabetes —abbreviation NIDDM

a form of diabetes mellitus that usually develops during childhood or adolescence and is characterized by a severe deficiency in insulin secretion resulting from atrophy of the islets of Langerhans and causing hyperglycemia and a marked tendency toward ketoacidosis —called also insulin-dependent diabetes, insulin-dependent diabetes mellitus, type 1 diabetes mellitus

a common form of diabetes mellitus that develops especially in adults and most often in obese individuals and that is characterized by hyperglycemia resulting from impaired insulin utilization coupled with the body's inability to compensate with increased insulin production —called also non-insulin-dependent diabetes, non-insulin-dependent diabetes mellitus, type 2 diabetes mellitus