liquefy (v.) Look up liquefy at Dictionary.com
early 15c., transitive, "to turn to liquid, dissolve, melt," from Old French liquefier "liquefy, dissolve" (12c., Modern French liquéfier), from Latin liquefacere "make liquid, melt, dissolve," from liquere "be fluid" (see liquid (adj.)) + facere "to make" (from PIE root *dhe- "to set, put").