Economic term referring to a monetary system where two metals (usually gold and silver) are both legal tender at a fixed ratio. Not to be confused with the everyday meaning of 'double standard' in ethics.
In the 19th century, many countries adopted the double standard system.
Silver standard, where only silver is the basis of currency.
bimetallism
Compound of 複 (double) and 本位 (standard). The term is a direct translation of the English 'double standard' in its economic sense.