(chem) the heat evolved or absorbed when one mole of a substance dissolves completely in a large volume of solvent
noun, Physics. 1. the heat absorbed by one gram or unit mass of a substance in the process of changing, at a constant temperature and pressure, from a solid to a gaseous state. Compare (def 10).
noun, Physics. 1. the heat absorbed per unit mass of a given material at its boiling point that completely converts the material to a gas at the same temperature: equal to the heat of condensation. heat of vaporization The amount of heat required to convert a liquid into a gas at constant temperature and pressure. […]
[heet-proof] /ˈhitˌpruf/ adjective 1. not affected or damaged by heat, especially when placed in an oven or over a direct flame: heatproof cookware.
noun, Medicine/Medical. 1. . noun 1. another name for heat exhaustion heat prostration n. See heat exhaustion.
noun 1. a device that uses a compressible refrigerant to transfer heat from one body, as the ground, air, or water, to another body, as a building, with the process being reversible. noun 1. a device, as used in a refrigerator, for extracting heat from a source and delivering it elsewhere at a much higher […]