Weltanschauung
Concise Oxford English Dictionary © 2008 Oxford University Press:
Weltanschauung /ˈvɛltˌanʃaʊʊŋ/
▶noun (pl. Weltanschauungen /-(ə)n/) a particular philosophy or view of life; a world view.
– origin Ger., from Welt ‘world’ + Anschauung ‘perception’.
'Weltanschauung' also found in these Oxford entries:

