Definition of block heater in English:
North American A device for heating the engine block of a vehicle.
- 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.
Definition of block heater in:
- British & World English dictionary
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