You searched for: “fan jet
turbofan (s), fan jet (noun), turbofans (pl)
1. A jet engine in which fans driven by a turbine force air into the exhaust gases, thereby increasing the propelling thrust of the engine.
2. A jet aircraft that has turbofan engines.

A type of gas turbine in which the fan driving air into a turbojet also forces additional air around the outside of the turbine, combining it with the exhaust of the turbojet to provide thrust.

Turbofans are quieter than simple turbojets and somewhat more fuel efficient, and are widely used in commercial aircraft.