methysergide
noun
meth·y·ser·gide ˌme-thə-ˈsər-ˌjīd 
: a serotonin antagonist C21H27N3O2 used in the form of its maleate especially in the treatment and prevention of migraine headaches
Word History
Etymology
methyl + lysergic acid + amide
First Known Use
1962, in the meaning defined above
Medical Definition
methysergide
noun
meth·y·ser·gide ˌmeth-ə-ˈsər-ˌjīd
: a serotonin antagonist used in the form of its maleate C21H27N3O2·C4H4O4 especially in the treatment and prevention of migraine headaches
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