Definitions for "Liquefy"
To convert from a solid form to that of a liquid; to melt; to dissolve; and technically, to melt by the sole agency of heat.
To convert from a gaseous form into a liquid; as, to liquefy natural gas.
To become liquid.
Behave as a fluid. During the strong shaking that can be caused by an earthquake, sands, soils, and landfill (especially if unconsolidated or water-saturated) may liquefy. This process, which can cause considerable damage, is called liquefaction.