Main Entry:

af·ter·burn·er

Pronunciation:

\-ˌbər-nər\

Function:

noun

Date:

1947

1 : a device incorporated into the tailpipe of a turbojet engine for injecting fuel into the hot exhaust gases and burning it to provide extra thrust 2 : a device for burning or catalytically destroying unburned or partially burned carbon compounds in exhaust (as from an automobile)