公こう開かい市し場じょう政せい策さくこうかいしじょうせいさくMeanings1nounopen market policyEconomic term referring to central bank operations that buy or sell government securities to control the money supply and interest rates.日本にほん銀ぎん行こうは公こう開かい市し場じょう政せい策さくを通つうじて金きん利りを