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The Collaborative International Dictionary
Eliquation

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.

Wiktionary
eliquation

n. (context metallurgy English) 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.