norgestrel UK /nɔːˈd͡ʒɛ.stɹl̩/US /nɔɹˈd͡ʒɛ.stɹəl/ noun1 •A synthetic progestogen C₂₁H₂₈O₂ having two optically active forms of which the biologically active levorotatory form is used in birth control pills.
