The Collaborative International Dictionary of English v.0.48:

Liquate \Li"quate\ (l[imac]"kw[=a]t), v. i. [L. liquatus, p. p.
   of liquare to melt.]
   To melt; to become liquid. [Obs.] --Woodward.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Liquate \Li"quate\, v. t. (Metal.)
   To separate by fusion, as a more fusible from a less fusible
   material.
   [1913 Webster]