Definition of block heater in English:

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block heater

noun

North American A device for heating the engine block of a vehicle.
Example sentences
  • Use a block heater in winter to pre-warm your car engine.
  • Most states don't get cold enough to plug in the block heater on your diesel.
  • The block heater is plugged into electricity to keep the coolant circulating so in the morning the engine isn't frozen up.

For editors and proofreaders

Syllabification: block heat·er

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