Definition of radiator in English:



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

    ‘a dipole is a less efficient radiator of sound than a monopole’
    • ‘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.’
    • ‘The term perfect blackbody applies to bodies that act as perfect radiators or absorbers of heat.’
    • ‘An effective space station will need far more solar arrays than are in the picture and probably will also need larger heat radiators.’
    • ‘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.’
    • ‘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.’
    • ‘"Iraqi labourers have installed a new radiator on a generator air intake.’
    1. 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.
      • ‘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).’
      • ‘Heating is by solid fuel, with radiators in all rooms.’
      • ‘Indoor life is comfortable here, so abundant is the supply of the geo-thermal hot water that pumps through radiators everywhere.’
      • ‘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.’
      • ‘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.’
      • ‘An integral back boiler provides domestic hot water and heats the radiators, which then provide central heating.’
      • ‘The steam travels through pipes to radiators or convectors, which give off heat and warm the room.’
      • ‘I showed him my leaking radiator and then told him that the central heating wasn't working either.’
      • ‘Last week's cold snap will exacerbate problems, making flat batteries, frozen radiators and damp electrical systems all the more likely.’
      • ‘He informed me that practically all the pipes and radiators throughout the church seemed to have burst.’
      • ‘The only reminder of the heating is a radiator in the bathroom, which the residents did not want to do without.’
      • ‘I excused myself, and toddled off, book in hand, to my warm spot by the dining room radiator.’
      • ‘I have an immersion heater so we'll have hot water, but the radiators are stone cold and it's chilly this evening.’
      • ‘The Inspectorate's report required rusty radiators, flaking paint, brittle water pipes, damp and floor defects to be fixed within three months.’
      • ‘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.’
      • ‘Choose one which appeals to you and add five drops to an oil burner or a saucer of water placed near a radiator.’
      • ‘Once a year, bleed all radiators to release trapped air, so that they heat up evenly.’
    2. 1.2A portable oil or electric heater.
      • ‘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.’
      • ‘Lennon went upstairs to his room and threw a portable radiator and clothes basket at his father before they returned downstairs.’
      • ‘Also an oil-filled, free-standing electric radiator in good working order is needed.’
      • ‘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.’
      • ‘Yep, from various people's descriptions a small oil radiator sounds like exactly what I'm looking for.’
      heater, radiator, convector
  • 2An engine-cooling device in a motor vehicle or aircraft consisting of a bank of thin tubes in which circulating water is cooled by the surrounding air.

    ‘the water in my car radiator froze’
    • ‘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.’
    • ‘Without the auto radiator, the engine would overheat and become inefficient.’
    • ‘The car radiator is a technology that has been around almost since automobiles were first invented.’
    • ‘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.’
    • ‘From the grille, the air goes directly to the radiator and to the engine.’
    • ‘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.’
    • ‘Although admittedly not a car expert, I do know pouring cold water into the radiator of an overheating engine is a bad idea.’
    • ‘During very cold winters, ordinary water would freeze within the engine block and the radiator.’
    • ‘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.’
    • ‘An early pit stop was made during the first hour to block off the radiators - the car was running too cool.’
    • ‘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.’
    • ‘Eliminating the radiators from the front of the car allowed the hood line to be lowered further.’
    • ‘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.’
    • ‘He started 13 th last week and parked 74 laps later after his radiator punctured and the engine overheated.’
    • ‘Put the hosepipe back on, refilled the radiator and I drove straight to the repair place.’