Definition of diuretic in English:



  • (chiefly of drugs) causing increased passing of urine.

    • ‘I can only take so many diuretic pills for the condition, and I'm on the maximum dose right now.’
    • ‘It may be necessary to increase the diuretic dosage, decrease the beta-blocker dosage or discontinue the beta blocker.’
    • ‘A diuretic drug such as thiazide, and a very low salt diet, can help to reduce the amount of urine being made by up to half.’
    • ‘You have to be brave, silly or very determined to go out shopping shortly after you've taken your daily dose of diuretic pills.’
    • ‘It supports natural diuretic action, but does not force water from the body like diuretic pills.’


  • A diuretic drug.

    • ‘The mean blood pressure readings were the same for the diuretics and the newer drugs.’
    • ‘Patients with atrial fibrillation also had more drug days for diuretics and for electrolytes.’
    • ‘ACE inhibitors may be a preferred second drug to add to diuretics if necessary to achieve blood pressure control.’
    • ‘There is also evidence that diuretics and bronchodilators may have a synergistic effect in improving lung mechanics.’
    • ‘Recommended drugs for heart failure include ACE inhibitors, beta blockers, and diuretics.’


Late Middle English: from Old French diuretique, or via late Latin from Greek diourētikos, from diourein ‘urinate’, from dia ‘through’ + ouron ‘urine’.