burnout

[ burn-out ]
/ ˈbɜrnˌaʊt /

noun

a fire that is totally destructive of something.
Also burn-out. fatigue, frustration, or apathy resulting from prolonged stress, overwork, or intense activity.
Rocketry.
  1. the termination of effective combustion in a rocket engine, due to exhaustion of propellant.
  2. the end of the powered portion of a rocket's flight.
Electricity. the breakdown of a lamp, motor, or other electrical device due to the heat created by the current flowing through it.

Origin of burnout

First recorded in 1900–05; noun use of verb phrase burn out
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for burnout