polyuria

Excessive production of urine. This is often an early sign of diabetes, but diuretics and polydipsia are also common causes.

Pol`y*u"ri*a (?), n. [NL. See Poly- , and Urine.] (Med.)

A persistently excessive flow of watery urine, with low specific gravity and without the presence of either albumin or sugar. It is generally accompanied with more or less thirst.

© Webster 1913