latent heat


latent heat

noun

Definition of LATENT HEAT

:  heat given off or absorbed in a process (as fusion or vaporization) other than a change of temperature

First Known Use of LATENT HEAT

circa 1757

latent heat

noun    (Medical Dictionary)

Medical Definition of LATENT HEAT

: heat given off or absorbed in a process (as fusion or vaporization) other than a change of temperature

latent heat

noun    (Concise Encyclopedia)

Characteristic amount of energy absorbed or released by a substance during a change in physical state that occurs without a change in temperature. Heat of fusion is the latent heat associated with melting a solid or freezing a liquid. Heat of vaporization is the latent heat associated with vapourizing a liquid or condensing (see condensation) a vapour. For example, when water reaches its boiling point and is kept boiling, it remains at that temperature until it has all evaporated; all the heat added to the water is absorbed as latent heat of vaporization and is carried away by the escaping vapour molecules.

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