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Pronunciation: nokt-yu're-a

Definition: Purposeful urination at night, after waking from sleep; typically caused by nocturnal urine volume in excess of bladder capacity or incomplete emptying of the bladder because of lower urinary tract obstruction or detrusor instability.

Synonym(s): nycturia

[noct- + G. ouron, urine]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.