单词	decamethonium
释义	decamethonium noun deca·​me·​tho·​ni·​um ˌde-kə-mə-ˈthō-nē-əm  : a synthetic ion used in the form of either its bromide or iodide salts (C16H38Br2N2 or C16H38I2N2) as a skeletal muscle relaxant also : either of these salts Word History Etymology deca- + methylene + -onium First Known Use circa 1949, in the meaning defined above Medical Definition decamethonium noun deca·​me·​tho·​ni·​um ˌdek-ə-mə-ˈthō-nē-əm  : a synthetic ion used especially in the form of its bromide C16H38Br2N2 or iodide C16H38I2N2 as a skeletal muscle relaxant
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