外がい国こく為替かわせ相そう場ばがいこくかわせそうばMeanings1nounforeign exchange rateA formal financial term referring to the rate at which one currency can be exchanged for another. Often used in economic news and business contexts.外がい国こく為替かわせ相そう場ばは毎まい日にち変へん動どうしている。