diabetes mellitus

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A severe, chronic form of diabetes caused by insufficient production of insulin and resulting in abnormal metabolism of carbohydrates, fats, and proteins. The disease, which typically appears in childhood or adolescence, is characterized by increased sugar levels in the blood and urine, excessive thirst, frequent urination, acidosis, and wasting.
• noun A mild form of diabetes that typically appears first in adulthood and is exacerbated by obesity and an inactive lifestyle. This disease often has no symptoms, is usually diagnosed by tests that indicate glucose intolerance, and is treated with changes in diet and an exercise regimen.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A medical disorder characterized by varying or persistent hyperglycemia, especially after eating.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun diabetes caused by a relative or absolute deficiency of insulin and characterized by polyuria