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Medical Term:

fatigue

Pronunciation: fă-tēg′

Definition:

  1. That state, following a period of mental or bodily activity, characterized by a lessened capacity or motivation for work and reduced efficiency of accomplishment, usually accompanied by a feeling of weariness, sleepiness, irritability, or loss of ambition; may also supervene when, from any cause, energy expenditure outstrips restorative processes and may be confined to a single organ.
  2. Sensation of boredom and lassitude due to absence of stimulation, monotony, or lack of interest in one's surroundings.

[Fr., fr. L. fatigo, to tire]

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