latent heat of transition The heat required to activate a phase change from a solid to a liquid or from a liquid to a gas, i.e. to a higher energy state (e.g. latent heat of melting), measured in joules per mole (J/mol). Latent heat is released by reactions in the reverse direction (e.g. latent heat of crystallization).

latent heat of transition The heat required to activate a phase change from a solid to a liquid or from a liquid to a gas, i.e. to a higher energy state (e.g. latent heat of melting), measured in joules per mole (J/mol). Latent heat is released by reactions in the reverse direction (e.g. latent heat of crystalization).