What does "diabetes" mean?

Diabetes: A disease which is attended with a persistent, excessive discharge of urine. Most frequently the urine is not only increased in quantity, but contains saccharine matter, in which case the disease is generally fatal. Diabetes mellitus Etym: [NL., sweet diabetes], that form of diabetes in which the urine contains saccharine matter. -- Diabetes insipidus Etym: [NL., lit., diabetes], the form of diabetes in which the urine contains no abnormal constituent.