Etymology tree Proto-Indo-European *mey- Proto-Indo-European *móyni Latin moene Proto-Indo-European *-yétider. Latin -iō Latin mūniō Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Latin mūnitiōnemlbor. Middle French munition Middle French amunitionbor. English ammunitionclip. English ammo Clipping of ammunition.