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 (to͞o′bō-ko͝o-rä′rĭn, -rēn′, -kyo͝o-, tyo͞o′-)
1. An alkaloid that is an active component of curare obtained from the plant Chondrodendron tomentosum.
2. The hydrated chloride form of this alkaloid, C38H44Cl2N2O6, used as a drug to relax skeletal muscles during anesthesia.

[Latin tubus, tube (from the practice of shipping it in bamboo tubes) + curarine (curare + -ine).]


a toxic alkaloid obtained from the stem of a S American vine. Formula: C37H42Cl2N2O6


(ˌtu boʊ kyʊˈrɑr in, -ɪn, ˌtyu-)

the principal active alkaloid of curare, C38H44Cl2N2O, used as a muscle relaxant, esp. as an adjunct to anesthesia.
[1895–1900; < German Tubocurarin=Tubocurar(e) (see tube, -o-, curare) + -in -in1]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.tubocurarine - a toxic alkaloid found in certain tropical South American trees that is a powerful relaxant for striated muscles; "curare acts by blocking cholinergic transmission at the myoneural junction"
alkaloid - natural bases containing nitrogen found in plants
neuromuscular blocking agent - a substance that interferes with the neural transmission between motor neurons and skeletal muscles
phytotoxin, plant toxin - any substance produced by plants that is similar in its properties to extracellular bacterial toxin