Liquation \Li*qua"tion\ (l[-i]*kw[=a]"sh[u^]n), n. [L. liquatio: cf. F. liquation.] 1. The act or operation of making or becoming liquid; also, the capacity of becoming liquid. [1913 Webster] 2. (Metal.) The process of separating, by heat, an easily fusible metal from one less fusible; eliquation. [1913 Webster]