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WordReference Random House Learner's Dictionary of American English © 2024ra•di•a•tor /ˈreɪdiˌeɪtɚ/USA pronunciation n. [countable]- Thermodynamicsa heating device, as a series or coil of pipes through which steam or hot water passes.
- Thermodynamics, Automotivea device constructed from thin-walled tubes and metal fins, used for cooling circulating water, as in an automobile engine.
WordReference Random House Unabridged Dictionary of American English © 2024ra•di•a•tor (rā′dē ā′tər),USA pronunciation n. - Thermodynamicsa person or thing that radiates.
- Thermodynamicsany of various heating devices, as a series or coil of pipes through which steam or hot water passes.
- Thermodynamics, Automotivea device constructed from thin-walled tubes and metal fins, used for cooling circulating water, as in an automobile engine.
- Radio and Televisiona transmitting antenna.
Collins Concise English Dictionary © HarperCollins Publishers:: radiator /ˈreɪdɪˌeɪtə/ n - a device for heating a room, building, etc, consisting of a series of pipes through which hot water or steam passes
- a device for cooling an internal-combustion engine, consisting of thin-walled tubes through which water passes. Heat is transferred from the water through the walls of the tubes to the airstream, which is created either by the motion of the vehicle or by a fan
- the part of an aerial or transmission line that radiates electromagnetic waves
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