radiator

A heating device consisting of a series of connected pipes, typically inside an upright metal structure, through which steam or hot water is circulated so as to radiate heat into the surrounding space.

A cooling device, as in automotive engines, through which water or other fluids circulate as a coolant.

A body that emits radiation.

A transmitting antenna.

Same as cooler, 2 .

In the transmission of electric waves, as in wireless telegraphy, an apparatus for the emission of electric oscillations; a form of oscillator.

Anything which radiates; a body or substance from which rays of heat emanate or radiate.

A part of a heating apparatus designed to communicate heat to a room, chiefly by convection, but partly, in some cases, by radiation.

That which radiates or emits rays, whether of light or heat; especially, that part of a heating apparatus from which the heat is radiated or diffused.

Any of various devices for cooling an internal substance by radiation, as a system of rings on a gun barrel for cooling it, or a nest of tubes with large radiating surface for cooling circulating water, as in an automobile.