Source : Webster's Revised Unabridged Dictionary (1913)

Enuresis \En`u*re"sis\, n. [NL., fr. Gr. ? to urinate in; ? + ?
   urine.] (Med.)
   An involuntary discharge of urine; incontinence of urine.

Source : WordNet®

enuresis
     n : inability to control the flow of urine and involuntary
         urination [syn: {urinary incontinence}]