Eliquation \El`i*qua"tion\, n. [L. eliquatio, fr. eliquare to
   clarify, strain; e + liquare to make liquid, melt.]
   (Metallurgy)
   The process of separating a fusible substance from one less
   fusible, by means of a degree of heat sufficient to melt the
   one and not the other, as an alloy of copper and lead;
   liquation. --Ure.
   [1913 Webster]