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methysergide

American

[meth-uh-sur-jahyd] / ˌmɛθ əˈsɜr dʒaɪd /

noun

Pharmacology.

an ergot alkaloid derivative, C 2 1 H 2 7 N 3 O 2 , used in the prophylaxis and treatment of migraine and cluster headaches.

1960–65; meth- + (l)yserg(ic) ( see lysergic acid) + -ide ( def. )

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023