phraseannō regiminisANNO REGIMINISannō regiminis m (ablative)Classical[ˈan.noː rɛˈɡɪ.mɪ.nɪs]Ecclesiastical[ˈan.no reˈd͡ʒiː.mi.nis]☆ KeepMeaningablativein the (n ᵗʰ) year of the reign