Melting-point meaning

mĕl'tĭng
The temperature at which a solid becomes a liquid at a fixed pressure, usually standard pressure.
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The temperature at which a solid and its liquid are in equilibrium, at any fixed pressure.
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The temperature at which a specified solid becomes liquid.
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The temperature at which a solid, given sufficient heat, 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, and depends on such factors as the purity of the substance and the surrounding pressure. The melting point of ice at a pressure of one atmosphere is 0°C (32°F); that of iron is 1,535°C (2,795°F).
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(chemistry) The temperature at which the solid and liquid phases of a substance are in equilibrium; it is relatively insensitive to changes in pressure.
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