Quar-tā'tion, n.

n. [Fr. quartation, from Lat. quartus, the fourth, from quatuor, four.] (Chem. & Metal.) The alloying of one part of gold, that is to be refined, with three parts of silver, by which means nitric or sulphuric acid is enabled to separate the gold from the inferior metals originally associated with it. Ure.