Monometallic :: Monometallic (a.) Consisting of one metal; of or pertaining to monometallism.
Monometallism :: Monometallism (n.) The legalized use of one metal only, as gold, or silver, in the standard currency of a country, or as a standard of money values. See Bimetallism..
Monometallist :: Monometallist (n.) One who believes in monometallism as opposed to bimetallism, etc..