Plain English Meaning

An extra burner at the back of a jet engine. It sprays more fuel into the hot exhaust and lights it, giving the engine a short burst of extra power.

Full Definition

A second combustion section installed downstream of the turbine in a turbojet or turbofan engine, where additional fuel is sprayed into the hot exhaust gases and ignited to produce a large, temporary increase in thrust.

Context Anchor

Seen in turbine engine and powerplant maintenance discussions, especially with high-performance jet aircraft.