a. and sb. [a. F. convulsant, pr. pple. of convulser to CONVULSE.]

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  A.  adj. Producing convulsions. B. sb. A drug that produces convulsions.

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1875.  H. C. Wood, Therap. (1879), 234. Porphyroxia … the most powerful of all the convulsant opium alkaloids. Ibid., 232. Claude Bernard ranks narcotina above morphia … as a convulsant in the lower animals.

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