Definition of furosemide in US English:


(British frusemide)


  • A synthetic compound with a strong diuretic action, used especially in the treatment of edema.

    Chemical formula: C₁₂H₁₁ClN₂O₅S

    • ‘Her symptoms improved after treatment with intravenous furosemide and metoprolol.’
    • ‘Diuretic drugs such as furosemide or the thiazides should not be used because they deplete sodium from the body.’
    • ‘Despite immediate treatment with furosemide and dexamethasone, two full codes, and pacemaker placement, the patient died within four hours postoperatively.’
    • ‘Chlorothiazide may be given with furosemide to boost its diuretic effects, depending on the patient's fluid retention status.’
    • ‘We have registered two products in the UK, one is the antihypertensive drug lisinopril and the other is diuretic frusemide.’


1960s: from fru- (alteration of fur(yl), denoting a radical derived from furan) + sem- (of unknown origin) + -ide.