Definition of Urination - excessive volume:

Excessive volume of urination means that you release abnormally large amounts of urine each day. The medical term for this condition is polyuria. 

Considerations:

An excessive volume of urination for an adult would be at least 2.5 liters of urine per day.

Polyuria is a fairly common symptom, which is often noticed when you have to get up to use the bathroom at night.

Common Causes:

• Drinking a large amount of fluids, particularly those containing caffeine or alcohol
• Too much salt or glucose (if you have diabetes)
• Certain medications, especially diuretics
• Diabetes (including diabetes insipidus)
• Psychogenic polydipsia, most common in women over age 30
• Kidney failure
• Sickle cell anemia
• Imaging tests that involve injecting a special dye (contrast media) into your vein -- the amount of urine you produce will increase for up to 24 hours afterwards