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radiator definition

ra·dia·tor (rā′dē āt′ər)

noun

anything that radiates; specif.,
  1. ☆ a series of pipes or coils through which hot water or steam circulates so as to radiate heat into a room, etc.
  2. ☆ a cooling device of tubes and fins, as in an automobile, through which circulating coolant passes
  3. any radioactive material or body
  4. Radio a portion of any transmitting antenna capable of producing radio-frequency energy

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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