Definition of "fatigue" in English

noun

1. A weariness caused by exertion; exhaustion.

2. (often in the plural) A menial task or tasks, especially in the military.

3. (engineering) Weakening and eventual failure of material, typically by cracking leading to complete separation, caused by repeated application of mechanical stress to the material.

4. (US) Attributive form of fatigues (“military clothing worn when doing menial tasks”).

verb

1. (transitive) To tire or make weary by physical or mental exertion.

2. (transitive, cooking) To wilt a salad by dressing or tossing it.

3. (intransitive) To lose so much strength or energy that one becomes tired, weary, feeble or exhausted.

4. (intransitive, engineering, of a material specimen) To undergo the process of fatigue; to fail as a result of fatigue.

5. (transitive, engineering) To cause to undergo the process of fatigue.

   • The repeated pressurization cycles fatigued the airplane's metal skin until it eventually broke up in flight.