parthenolide
/ˈpɑːθɪnə(ʊ)lʌɪd/Pharmacology
noun
A sesquiterpene lactone, C15H20O3, with antibacterial and cytotoxic properties which is the active ingredient in preparations of the leaves and flowers of feverfew, Tanacetum parthenium, used as a herbal medicine for the prevention of migraine.
Origin
1950s. From scientific Latin parthen- + -o- + l- + -ide.