The Collaborative International Dictionary of English v.0.48:
liquidise \liquidise\ v. t. Same as liquidize. Syn: liquefy, liquify, make liquid, liquidize, make fluid. [WordNet 1.5]WordNet (r) 3.0 (2006):
liquidise v 1: make (a solid substance) liquid, as by heating; "liquefy the silver" [syn: liquefy, liquify, liquidize, liquidise]