BIMETALLISM
bimetallism
(noun) a monetary standard under which the basic unit of currency is defined by stated amounts of two metals (usually gold and silver) with values set at a predetermined ratio
Source: WordNet® 3.1
Etymology
Noun
bimetallism (countable and uncountable, plural bimetallisms)
(economics) The use of a monetary standard based upon two different metals, traditionally gold and silver usually in a fixed ratio of values.
Source: Wiktionary
Bi*met"al*lism, n. Etym: [F. bimétalisme.]
Definition: The legalized use of two metals (as gold and silver) in the
currency of a country, at a fixed relative value; -- in opposition to
monometallism.
Note: The words bimétallisme and monométallisme are due to M.
Cernuschi [1869]. Littré.
Source: Webster’s Unabridged Dictionary 1913 Edition