Plain English Meaning

A jet engine with a big fan up front. Some of the air the fan moves goes through the middle of the engine where fuel is burned, and the rest is pushed around the outside. Both streams of air combine to push the airplane forward, which makes the engine more efficient and quieter than a plain jet.

Full Definition

A turbine engine in which a large fan at the front of the engine drives a significant volume of air around the outside of the engine core, while a smaller portion of that air passes through the core to be burned with fuel. The thrust produced by the bypassed (cool) air is combined with the thrust from the hot exhaust gases to produce total engine thrust.

Context Anchor

Seen when comparing turbine engine types, especially on transport aircraft, business jets, and some advanced .