Which term means absence of urine?

• A. Anuria
• B. Diuretic
• C. Dysuria
• D. Enuresis

Answer: (A)

Absence of urine is called anuria. This term describes a situation where the kidneys produce little to no urine, typically defined as less than about 100 mL in 24 hours. It’s distinct from oliguria, which means reduced urine output but not complete absence, and polyuria, which is excessive urine production. The other terms describe different urinary issues: a diuretic is a substance or drug that increases urine production; dysuria means painful or difficult urination; enuresis is involuntary urination, most often during sleep. Anuria signals a serious problem with kidney function, obstruction, or severe dehydration and requires prompt evaluation to identify and treat the underlying cause.