LebensraumPronunciation: /ˈleɪb(ə)nzˌraʊm, ˈleːbnsˌraʊm/Definition of Lebensraum noun [mass noun] the territory which a state or nation believes is needed for its natural development. Origin:German, literally 'living space' (originally with reference to Germany)Lebensraum in other Oxford dictionaries Definition of Lebensraum in the US English dictionary
