Methylergonovine Definition

mĕth′əl-ûr′gə-nō ′ vĭn
noun
A semisynthetic ergot alkaloid, C20 H25 N3 O2 , that stimulates uterine contractions and is used in its maleate form to treat or prevent uterine bleeding after childbirth or abortion.
American Heritage Medicine
Wiktionary