This train has a diesel engine.
- The definition of a diesel is an engine that burns fuel oil, or something powered by this type of engine.
An example of a diesel is a train that runs on fuel oil.
- Diesel is defined as to run after the ignition is off.
An example of diesel is for a vehicle's engine to continue running even though it has been turned off.
- a type of internal-combustion engine that burns fuel oil: the ignition is brought about by heat resulting from air compression, instead of by an electric spark as in a gasoline enginealso diesel engine (or motor)
- a locomotive, truck, etc. powered by such an engine
- a petroleum distillate used in diesel engines
Origin of dieselafter R. Diesel (1858-1913), German inventor
- A diesel engine.
- A vehicle powered by a diesel engine.
- Any of various fuels used to power diesel engines, especially one derived from petroleum.
intransitive verbdie·seled, die·sel·ing, die·sels
- To continue running after the ignition has been turned off, as when an open throttle supplies fuel to an engine that is still sufficiently hot to ignite it.
- To drive a diesel-powered vehicle: We dieseled through the countryside.
- To refuel a diesel-powered vehicle. Often used with up.
(countable and uncountable, plural diesels)
(third-person singular simple present diesels, present participle dieseling, simple past and past participle dieseled)
- To ignite a substance by using the heat generated by compression
- (automotive) For a spark-ignition internal combustion engine to continue running after the electrical current to the spark plugs has been turned off. This occurs when there's enough heat in the combustion chamber to ignite the air/fuel without a spark, the same way heat and pressure cause ignition in a diesel engine.
- The only reason the VW bug has a solenoid is to prevent it from dieseling.
From the inventor, Dr. Rudolph Diesel, who developed a heavy-duty engine in Germany (1892–1897) and perfected it throughout his life.