Diuretic (noun)

1. A substance or drug that increases the amount of urine produced and excreted, used especially to treat conditions such as high blood pressure and heart failure.
2. A natural substance that increase urine production.

Origin:

From greek diourein "to urinate" from dia "through" + ouron "urine".

Examples:

1. The doctor prescribed a diuretic to lower the patient's blood pressure.
2. He was taking diuretic to help with his congestive heart failure.
3. The diuretic effects of caffeine can dehydrate the body if consumed in large amounts.
4. Some diuretic herbs are used to treat edema.
5. Some diuretic fruits, such as watermelon, can help flush out toxins from the body.