Definition of quinidine in English:

quinidine

noun

mass nounMedicine
  • A compound obtained from cinchona bark and used to treat irregularities of heart rhythm. It is an isomer of quinine.

    • ‘Intestinal absorption of penicillin, captopril, ciprofloxacin, quinidine and zidovudine was reported to be reduced when given with food.’
    • ‘This has been shown to occur with penicillin, valproic acid, quinidine, sulfonamides, cimetidine and heparin.’
    • ‘Metformin also may interact with medications such as cimetidine, digoxin, amiloride, quinidine, vancomycin, and trimethoprim, and may interfere with vitamin B12 absorption.’
    • ‘Treatment choices are to change the rhythm back to normal and maintain it with medications such as digitalis, quinidine, or other medicines or by electrical stunning of the heart (cardioversion).’
    • ‘Sinus node dysfunction is usually caused by drugs such as digoxin, quinidine, or procainamide.’

Origin

Mid 19th century: from Spanish quina ‘cinchona bark’ (from Quechua kina ‘bark’) + -ide + -ine.

Pronunciation

quinidine

/ˈkwɪnɪdiːn/