a polygenic disease characterized by abnormally high glucose levels in the blood; any of several metabolic disorders marked by excessive urination and persistent thirst
"After his recent diagnosis, Mark had to adjust his diet and start monitoring his blood sugar regularly to manage the diabetes."
Diabetes insipidus; any condition characterized by excessive or incontinent urine, now specifically as caused by impaired production of, or response to, the antidiuretic hormone vasopressin.
"The doctor explained that his sudden extreme thirst and frequent nighttime urination were symptoms of diabetes insipidus, a rare condition where his body fails to properly respond to the hormone needed to concentrate urine."
In plain English: Diabetes is a condition where your body has trouble turning sugar from food into energy.
"The doctor advised him to eat less sugar because he has diabetes."
Usage: Diabetes is a general term for conditions involving high blood sugar, not limited to the rare form known as diabetes insipidus. Use this word to describe diseases where the body cannot properly regulate glucose levels, typically caused by issues with insulin production or function.
The word diabetes comes from the Latin diabētēs, which means "siphon." It was borrowed into English via Ancient Greek to describe a condition where fluids seem to drain away.