Search the Dictionary

An instrument for measuring the strength of an electric current in the heat which it produces, or for determining the heat developed by such a current.

Caloric; heat; regarded as a material but imponderable substance.

Relating to heat, or to the production of heat; producing heat; thermogenous; as, the thermogenic tissues.

Producing heat; thermogenic.

The trace or record made by means of a thermograph.

An instrument for automatically recording indications of the variation of temperature.

Any process of writing involving the use of heat.

A junction of two dissimilar conductors used to produce a thermoelectric current, as in one form of pyrometer; a thermocouple.

A discourse on, or an account of, heat. Whewell.

hibited by a substance on being moderately heated. It is shown esp. by certain substances that have been exposed to the action of light or to the cathode rays. ---lu`mi*nes"cent (#), a.

The resolution of a compound into parts by heat; dissociation by heat.

Of or pertaining to thermolysis.

To subject to thermolysis; to dissociate by heat.

Magnetism as affected or caused by the action of heat; the relation of heat to magnetism.

An instrument for measuring temperature, founded on the principle that changes of temperature in bodies are accompained by proportional changes in their volumes or dimensions.

Of or pertaining to a thermometer; as, the thermometrical scale or tube.

In a thermometrical manner; by means of a thermometer.

An instrument for recording graphically the variations of temperature, or the indications of a thermometer.

The estimation of temperature by the use of a thermometric apparatus.

A heat engine; a hot-air engine.