ポツダム宣せん言げんポツダムせんげんMeanings1nounPotsdam Declarationhistorical termHistorical term referring to the July 26, 1945 proclamation that defined the terms for Japan's surrender in World War II.ポツダム宣せん言げんの受じゅ諾だくにより、日本にほんは降こう伏ふくした。Japan surrendered by accepting the Potsdam Declaration.