Orlando di Lasso, Orlean, Orleans, Orléans, Orléansville, Orlev, Orlik, Orlon, Orlow, Orly, Ormandy, Ormesson, Ormocere, Ormond, Ormus, Ormuzd, Ornament, Ornamentstich, Ornat, Orne, Orneta, Ornithologie, Ornithopus, Ornithose, Örnsköldsvik, oro..., Orobanche, Orogenese, Orographie, Orometrie - Meyers Großes Taschenlexikon in 25 Bänden - Wörterbücher