Definition of radiator in English:



  • 1A thing that radiates or emits light, heat, or sound.

    • ‘It follows, then, that any radiation emitted by the cavity radiator corresponds to the definition of blackbody radiation.’
    • ‘A different type of laser currently in development is the isotropic radiator.’
    • ‘In winter, sea water is electrically heated and the steam is compressed as high-pressure vapour circulated through radiators.’
    • ‘Examples of radar reflectors are solar panels and heat radiators.’
    • ‘An effective space station will need far more solar arrays than are in the picture and probably will also need larger heat radiators.’
    • ‘"Iraqi labourers have installed a new radiator on a generator air intake.’
    • ‘The term perfect blackbody applies to bodies that act as perfect radiators or absorbers of heat.’
    • ‘Uncoated glass is a good radiator, so heat radiates from the window and is lost.’
    • ‘So ceratopsian frills may also have functioned as heat radiators, or signaling devices, or to attract mates, in addition to whatever protective function they may or may not have had.’
    1. 1.1 A device for heating a room consisting of a metal tank connected by pipes through which hot water is pumped by a central heating system.
      • ‘Once a year, bleed all radiators to release trapped air, so that they heat up evenly.’
      • ‘Choose one which appeals to you and add five drops to an oil burner or a saucer of water placed near a radiator.’
      • ‘Heating is by solid fuel, with radiators in all rooms.’
      • ‘Last week's cold snap will exacerbate problems, making flat batteries, frozen radiators and damp electrical systems all the more likely.’
      • ‘The Inspectorate's report required rusty radiators, flaking paint, brittle water pipes, damp and floor defects to be fixed within three months.’
      • ‘A wood-fired boiler is an obvious match for a home with radiators or other hydronic systems (hot water moving through pipes).’
      • ‘He informed me that practically all the pipes and radiators throughout the church seemed to have burst.’
      • ‘I showed him my leaking radiator and then told him that the central heating wasn't working either.’
      • ‘The rooms themselves are cooled by cold water flowing through radiators, just as they are heated in the winter by hot water or steam flowing through them.’
      • ‘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.’
      • ‘I have an immersion heater so we'll have hot water, but the radiators are stone cold and it's chilly this evening.’
      • ‘I excused myself, and toddled off, book in hand, to my warm spot by the dining room radiator.’
      • ‘The steam travels through pipes to radiators or convectors, which give off heat and warm the room.’
      • ‘My property is a one bedroom flat with 5 radiators, gas central heating and a gas cooker.’
      • ‘This morning I painted the radiator in that room.’
      • ‘I was just going to tell you how to turn on the radiator, because these rooms freeze at night.’
      • ‘The only reminder of the heating is a radiator in the bathroom, which the residents did not want to do without.’
      • ‘Indoor life is comfortable here, so abundant is the supply of the geo-thermal hot water that pumps through radiators everywhere.’
      • ‘An integral back boiler provides domestic hot water and heats the radiators, which then provide central heating.’
      • ‘We were huddled close to the radiator in our dining room after Sunday lunch waiting anxiously for him to relay the story of the game.’
    2. 1.2 A portable heater resembling a radiator.
      • ‘Also an oil-filled, free-standing electric radiator in good working order is needed.’
      • ‘When you first see the F - 50, it's easy to believe you're looking at a portable radiator.’
      • ‘Lennon went upstairs to his room and threw a portable radiator and clothes basket at his father before they returned downstairs.’
      • ‘Listening keenly and swishing deftly, we pinpointed the noises to be coming from the small portable radiator that sat against the wall of my sisters room.’
      • ‘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.’
      • ‘Yep, from various people's descriptions a small oil radiator sounds like exactly what I'm looking for.’
      heater, convector
      View synonyms
  • 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.

    • ‘Without the auto radiator, the engine would overheat and become inefficient.’
    • ‘Put the hosepipe back on, refilled the radiator and I drove straight to the repair place.’
    • ‘Eliminating the radiators from the front of the car allowed the hood line to be lowered further.’
    • ‘An early pit stop was made during the first hour to block off the radiators - the car was running too cool.’
    • ‘The car radiator is a technology that has been around almost since automobiles were first invented.’
    • ‘Later, while filling his car radiator with water at a service station, he offers a lift to a young woman who is also trying to thumb a ride west.’
    • ‘The thin air also reduces the engine's power and decreases the cooling efficiency on the oil and water radiators that cool the engine.’
    • ‘The radiator has tubes that contain large amount of water and has an area to allow outside air to pass through.’
    • ‘During very cold winters, ordinary water would freeze within the engine block and the radiator.’
    • ‘No less than three radiators sit in the engine bay, one for the air conditioning and one each for the low and high temperature cooling loops.’
    • ‘If your radiator needs to be replaced, you can find aftermarket radiators that are more affordable but are nonetheless excellent in quality.’
    • ‘The itinerant handyman is driving through the Arizona desert when he realizes that his car radiator is in need of water.’
    • ‘From the grille, the air goes directly to the radiator and to the engine.’
    • ‘He started 13 th last week and parked 74 laps later after his radiator punctured and the engine overheated.’
    • ‘This eliminates the pipe and clamps beneath the driver's seat used ever since the teams abandoned dual water radiators.’
    • ‘Will stricter emissions rules permit copper to make a comeback in automotive radiators?’
    • ‘The cooling fluid had to be pumped from the radiator to the engine via tubing and a series of pumps.’
    • ‘Railway lines are buckling in the sun, car radiators are boiling in traffic queues, talk has turned to global warming and the increased threat of flooding.’
    • ‘Although admittedly not a car expert, I do know pouring cold water into the radiator of an overheating engine is a bad idea.’
    • ‘Water cooled engines include radiator, pump, thermostat, fan and connecting hoses and pipes.’