Definition of radiator in English:

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Pronunciation: /ˈrādēˌādər/


1A thing that radiates or emits light, heat, or sound.
Example sentences
  • It follows, then, that any radiation emitted by the cavity radiator corresponds to the definition of blackbody radiation.
  • Examples of radar reflectors are solar panels and heat radiators.
  • Uncoated glass is a good radiator, so heat radiates from the window and is lost.
1.1A device for heating a room consisting of a metal tank connected by pipes through which hot water is pumped by a central heating system.
Example sentences
  • My property is a one bedroom flat with 5 radiators, gas central heating and a gas cooker.
  • He made his money by inventing a pipe connector which allows radiators to be swivelled forward without being disconnected, making it easy to wallpaper behind them.
  • A wood-fired boiler is an obvious match for a home with radiators or other hydronic systems (hot water moving through pipes).
1.2A portable heater resembling a radiator.
Example sentences
  • Mrs Foster added that ever since the fire was condemned she has had to buy and use portable electric radiators.
  • He went on to say that among the areas which had now become a dumping ground was at the back of Waterford Regional Hospital where someone had left radiators, other heaters and furniture.
  • When you first see the F - 50, it's easy to believe you're looking at a portable radiator.
2An engine-cooling device in a motor vehicle or aircraft consisting of a bank of thin tubes in which circulating fluid is cooled by the surrounding air.
Example sentences
  • The thin air also reduces the engine's power and decreases the cooling efficiency on the oil and water radiators that cool the engine.
  • Water cooled engines include radiator, pump, thermostat, fan and connecting hoses and pipes.
  • The radiator has tubes that contain large amount of water and has an area to allow outside air to pass through.
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