Nazi, the informal and originally derogatory term for a party member, abbreviates the party's name (nationalsozialist [natsi̯oˈnaːlzotsi̯aˌlɪst]), and was coined in analogy with sozi (pronounced. Nazi germany, [i] officially the german reich[j] and later the greater german reich, [k] was the german state between 1933 and 1945, when adolf hitler and the nazi party controlled the. Nazi germany was the totalitarian regime that ran germany, countries and regions annexed by germany, and countries occupied by germany during world war ii, between january 30,.