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| burn·out [ búrn òwt ] (plural burn·outs) |
noun |
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| Definition: |
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1. exhaustion: psychological exhaustion and diminished efficiency resulting from overwork or prolonged exposure to stress
  reported a high rate of burnout among nurses
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2. extremely exhausted person: somebody affected by psychological exhaustion
(
informal
)
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3. mechanical engineering machine failure through heat: failure of a machine or part of a machine to work because of overuse or excessive heat or friction
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4. aerospace rocket failure: failure of a rocket or jet engine to work because the fuel supply has been exhausted or cut off
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