RADIATOR

radiator

(noun) a mechanism consisting of a metal honeycomb through which hot fluids circulate; heat is transferred from the fluid through the honeycomb to the airstream that is created either by the motion of the vehicle or by a fan

radiator

(noun) heater consisting of a series of pipes for circulating steam or hot water to heat rooms or buildings

radiator

(noun) any object that radiates energy

Source: WordNet® 3.1

Etymology

Noun

radiator (plural radiators)

Anything which radiates or emits rays.

(automotive) A device that lowers engine coolant temperature by conducting heat to the air, through metal fins.

(of buildings) A finned metal fixture that carries hot water or steam in order to heat a room.

(electronics) A type of antenna.

Source: Wiktionary

Ra"di*a`tor, n.

Definition: 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; as, a stream radiator.

Source: Webster’s Unabridged Dictionary 1913 Edition