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The Collaborative International Dictionary of English v.0.48 (gcide)

Liquefaction \Liq`ue*fac"tion\ (l[i^]k`w[-e]*f[a^]k"sh[u^]n), n.
[L. liquefactio: cf. F. liqu['e]faction. See {Liquefy}.]
1. The act or operation of making or becoming liquid;
especially, the conversion of a solid into a liquid by the
sole agency of heat.
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2. The state of being liquid.
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3. (Chem. Physics) The act, process, or method, of reducing a
gas or vapor to a liquid by means of cold or pressure; as,
the liquefaction of oxygen or hydrogen.
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