norelgestromin

noun

nor·​el·​ges·​tro·​min ˌnȯr-el-ˈjes-trə-mən 

: a synthetic progestogen C₂₁H₂₉NO₂ that is the primary active metabolite of norgestimate and is used in combination with ethinyl estradiol in a contraceptive transdermal patch see ortho evra