Liquification

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In physics, to liquefy or liquify means to turn something into the liquid state.

Liquefaction can be a change from a gas to a liquid through condensation, usually by cooling, or a change from a solid to a liquid through melting, usually by heating or by grinding and blending with another liquid to induce dissolution. Earthquakes can also cause liquefaction because loosely packed, water-logged sediments come loose from the shaking of the earthquake.

Liquefaction is referred to in physics, chemistry, and genetic engineering to the process of condensing a gas into a liquid, while in geology it refers to the process by which saturated, unconsolidated sediments are transformed into a substance that acts like a liquid. In the energy industry either liquification or occasionally liquefaction refers to reforming coal or gas into a liquid form that is economical to transport and use as fuel.