etonogestrel

noun
et·o·no·ges·trel | \ˌet-ə-nō-ˈjes-trəl \

Medical Definition of etonogestrel 

: a synthetic progestin C22H28O2 used alone or in combination with an estrogen to prevent pregnancy

Note: Etonogestrel is marketed under the trademark Nexplanon and when combined with ethinyl estradiol under the trademark NuvaRing.

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