milbemycin
/ˌmɪlbəˈmʌɪsɪn/Pharmacology
noun
Any of a group of macrolide antibiotics structurally related to the avermectins, used in veterinary medicine for the treatment and prevention of various ecto- and endoparasitic infestations.
Origin
1970s; earliest use found in Tetrahedron Letters. From German Milbemycin from Milbe mite, tick + -mycin.