noun
key currency
Economic term for a currency widely used in international trade and held as a reserve by central banks, such as the US dollar or euro.
米ドルは代表的なキーカレンシーだ。
The US dollar is a typical key currency.
Variant with interpunct; less common but seen in some texts.
Synonymous Japanese term; キーカレンシー is the direct loanword, while 基軸通貨 is the native equivalent used in formal economic contexts.
Loanword from English 'key currency'.