/ ˌenjʊəˈriːsɪs; NAmE ˌenjʊˈriː-/ noun
[ U ] ( medical ) urination (= letting waste liquid flow from the body) that is not under sb's control, especially in the case of a child who is asleep
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WORD ORIGIN
early 19th cent.: modern Latin , from Greek enourein urinate in, from en- in + ouron urine.