“The conversion of a solid to a liquid by the application of heat and/or pressure.For a liquid crystal, melting occurs when the three-dimensional periodic structure of a solid collapses to give a liquid-crystal phase.”
Reference: IUPAC. Compendium of Chemical Terminology, 2nd ed. (the “Gold Book”).Compiled by A. D. McNaught and A. Wilkinson.Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.doi:10.1351/goldbook.