Vapour
A gas whose temperature is below its critical temperature, so that it can be condensed to the liquid or solid state by increase of pressure alone.
See also: Enthalpy of Vaporization, Gas, Heat of Vaporization, Latent Heat of Evaporation, Saturated Vapour, Superheated Vapour, Toxic Vapours, Vapour Barrier, Vapour Lock, Vapour Pressure, Vapourization.
