Definitions for "Diesel"
A type of internal-combustion engine in which the air drawn in by the suction stroke is so highly compressed that the heat generated ignites the fuel (usually a heavy oil), the fuel being automatically sprayed into the cylinder under pressure. The Diesel engine has a very high thermal efficiency.
German engineer (born in France) who invented the diesel engine (1858-1913)
an internal-combustion engine that burns heavy oil
Keywords:  comparison, good, example
a good example for comparison