‘外币’ literally means ‘outside currency’ — the character 外 (wài) means ‘outside’ or ‘foreign’, and 币 (bì) means ‘currency’ or ‘coin’. Together, they refer to any official money issued by a country other than China, such as US dollars, euros, Japanese yen, or British pounds. It is a formal, neutral term commonly used in banking, finance, travel, and international trade contexts.

In everyday life, Chinese speakers use ‘外币’ when exchanging money at banks or airports, reporting foreign income, or discussing exchange rates. Unlike colloquial terms like ‘美金’ (US dollars) or ‘欧元’ (euros), ‘外币’ is a general, inclusive category — it does not specify which currency, only that it originates abroad. The word carries no emotional connotation and appears frequently in official documents, news reports, and financial regulations.