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diabetes

n.
  1. Any of several diseases which is attended with a persistent, excessive discharge of urine; when used without qualification, the term usually refers to diabetes mellitus. The most common form is diabetes mellitus, in which the urine is not only increased in quantity, but contains saccharine matter, and the condition if untreated is generally fatal.
    2. Diabetes mellitus ,
    the form of diabetes in which the urine contains no abnormal constituent.