Definition of tubocurarine in US English:



  • A compound of the alkaloid class obtained from curare and used to produce relaxation of voluntary muscles before surgery and in tetanus, encephalitis, and poliomyelitis.

    • ‘Examples include the analgesics morphine and codeine, the antibiotic sanguinarine, the gout suppressant colchicine, and the muscle relaxant (+) tubocurarine.’
    • ‘The pH of tubocurarine chloride injection did not change appreciably during the 90-day study period.’
    • ‘Forensic analysis of skeletal muscle relaxants such as tubocurarine and gallamine has been hampered by the fact that these quaternary ammonium compounds are not readily extractable from the biological matrix.’
    • ‘Not all voluntary muscles are equally sensitive to tubocurarine, and fortunately the respiratory muscles are the most spared.’


Late 19th century: from Latin tubus ‘tube’ + curare + -ine.