(physics) A measure of the ability of a particular body or assembly to conduct heat.

plural of thermal paper

Paper treated so as to change color on exposure to heat, is used in thermal printers.

A tool that burns iron in an oxygen-rich environment to create very high temperatures for cutting.

(thermodynamics) A state in which two or more systems can exchange thermal energy.

plural of thermal spring

A hot spring.

(physics) A relatively slow-moving neutron whose energy is governed by the temperature of its environment.

plural of thermal neutron

a rocket that is powered by a thermal source, such as a nuclear-thermal rocket or a solar-thermal rocket or a rocket powered by an energy beam such as a laser or microwave beam