- The temperature at which a liquid and a solid of the same substance are at equilibrium with each other. Each pure substance has a specific melting point, for a given surrounding pressure. For example, at a pressure of 1 atmosphere, the melting point of water is 0 °C. Also called freezing point (1).
- The temperature at which a solid substance being heated begins to liquefy.
- abbreviation mp
- synonym melting temperature
- symbol for proton mass, or proton rest mass.
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