利り尿にょう剤ざいりにょうざいMeanings1noundiureticMedical term for a substance that promotes urine production. Used in clinical and everyday health contexts.医い者しゃはむくみを取とるために利り尿にょう剤ざいを処しょ方ほうした。The doctor prescribed a diuretic to reduce the swelling.