- the temperature at which a solid substance melts or fuses.
Origin of melting point
First recorded in 1835–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for melting point
Paraffin with a melting-point of 50° C. or upwards does well.On Laboratory Arts
The precipitate is in the form of rosettes or needles; melting-point 137°.
The hydrochloride is soluble in alcohol and in water, melting-point about 205°.
Such a curve is called the curve of fusion, or the melting-point curve.The Phase Rule and Its Applications
The melting-point of pure chloral hydrate is 57, the boiling-point 96-98 C.
- the temperature at which a solid turns into a liquid. It is equal to the freezing point
- 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). See also state of matter.
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The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.