a. [after BIMETALLIC: see TRI-] Pertaining to or using three metals as currency. So Trimetallism, the use of a triple standard of currency.
1877. Bucks Co. Gaz., 5 June, 1/7. Lycurgus was unquestionably the greatest statesman of classic Greece, for he understood the true principles of bi-metallic and tri-metallic and multi-metallic money.
1887. Contemp. Rev., Dec., 812. The metal coinage system of the world is not … ‘mono-metallic,’ nor ‘bi-metallic,’ but ‘trimetallic.’
1897. Westm. Gaz., 8 Oct., 2/3. Here is a correspondent in the Times … who asks, ‘Why not Trimetallism?’
