heat, thermal

A bottle, flask or similar vessel having a vacuum between its inner and outer silvered walls; designed to maintain the temperature of its contents

(historical) A unit of measure whose identification remains very unclear.

An apparatus used to measure temperature.

Of, or relating to the fusion of atomic nuclei at high temperatures. / Of, or relating to the use of atomic weapons based on such fusion, especially as distinguished from those based on fission.

(military) A thermonuclear weapon.

(physics) the state of a system in which its energy distribution is such that all parts of the system have the same temperature and no heat flows

Of, or relating to the conversion of heat into other forms of energy. / (physics) Of, or relating to thermodynamics.

(physics) The science of the conversions between heat and other forms of energy.

The layer of the Earth's atmosphere directly above the mesosphere and directly below the exosphere.