melting point(redirected from Melting point order)
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n. Abbr. mp
1. The temperature at which a solid becomes a liquid at a fixed pressure, usually standard pressure.
2. The temperature at which a solid and its liquid are in equilibrium, at any fixed pressure.
(Chemistry) the temperature at which a solid turns into a liquid. It is equal to the freezing point
the temperature at which a solid substance melts or fuses.
The temperature at which a solid becomes a liquid. For a given substance, the melting point of its solid form is the same as the freezing point of its liquid form. The melting point of ice is 32°F (0°C); that of iron is 2,797°F (1,535°C).