LATENT HEAT

amount of heat required to change a substance into a new state; heat that does not affect body temperature

In thermochemistry, latent heat is the amount of energy in the form of heat released or absorbed by a substance during a change of phase (i.e. solid, liquid, or gas), - also called a phase transition. The term was introduced around 1750 by Joseph Black as derived from the Latin latere, to lie hidden. The term is now obsolete, replaced by "enthalpy of transformation". Two latent heats (or enthalpies) are typically described: latent heat of fusion (melting), and latent heat of vaporization (boiling). The names describe the direction of heat flow from one phase to the next: solid → liquid → gas.
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Noun
1. heat absorbed or radiated during a change of phase at a constant temperature and pressure
(synonym) heat of transformation
(hypernym) heat, heat energy
(hyponym) heat of condensation

Heat that is absorbed without causing a rise in temperature. For example, "latent heat of vaporization" refers to the amount of heat required to convert a liquid to vapor at a particular temperature.

latent heat
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