(physics) The electromagnetic radiation emitted from a body as a consequence of its temperature; increasing the temperature of the body increases the amount of radiation produced, and shifts it to shorter wavelengths (higher frequencies) in a manner explained only by quantum mechanics.

(geology) The thermal boundary layer between the surface of the Earth (cooled by conduction) and the asthenosphere (cooled by convection).

(physics) The internal energy of a system in thermodynamic equilibrium due to its temperature / (engineering) A form of energy; sensible energy; heat / (military) The energy released by an explosion

The removal of contaminants from soil etc. by heating

(genetics) A laboratory device in which a polymerase chain reaction is carried out repeatedly in cycles which in turn amplifies the sample DNA segments. The instrument contains a thermal block which contains the DNA samples and can precisely control the internal temperature.

A thermal insulator placed between two thermal conductors to reduce the flow of heat; often used in aluminum doors and windows.

(chemistry, metallurgy) Any of several analytical techniques that monitor the chemical and physical changes that occur as a material is heated.

atmospheric turbulence due to convection currents.

(computer hardware) A printer that operates by applying heat to selected areas of specially treated paper.

plural of thermal printer