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WordNet
urinary retention

n. holding urine in the urinary bladder; "he has a problem with urinary retention"

Wikipedia
Urinary retention

Urinary retention, also known as ischuria, is an inability to completely empty the bladder. It is a common complication of benign prostatic hyperplasia (BPH), though it can also be caused by:

Diagnosis and treatment may require a catheter or prostatic stent.

Usage examples of "urinary retention".

Look out for bloody stool, urinary retention, lumps in the throat, sputum flecked with blood, discharges from the nipple, lumps in the armpit.