• IPA: /ɪɡˈzɔːs.tʃən/

exhaustion (uncountable)

  1. The point of complete depletion, of the state of being used up.
    We worked the mine to exhaustion, there's nothing left to extract.
  2. Supreme tiredness; having exhausted energy.
    I ran in the marathon to exhaustion, then I collapsed and had to be carried away.
  3. (dated, chemistry) The removal (by percolation etc) of an active medicinal constituent from plant material.
  4. (dated, physics) The removal of all air from a vessel (the creation of a vacuum).
  5. (maths) An exhaustive procedure
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