liquefaction -
Process of, or state of having been, made liquid.
Wikipedia
To liquefy (sometimes spelled 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 where loosely packed, water-logged sediments come loose from the intense shaking of the earthquake.
OmegaWiki Dictionary
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liquefaction Process of, or state of having been, made liquid.