exhaust


Concise Oxford English Dictionary © 2008 Oxford University Press:
exhaust /ɪgˈzɔːst, ɛg-/
verb
  • 1 (often as adj. exhausted or exhausting) tire out completely.
  • 2 use up (resources or reserves) completely.

    ■ explore (a subject) thoroughly.

  • 3 expel (gas or steam) from an engine or other machine.
noun waste gases or air expelled from an engine or other machine.

■ the system through which waste gases are expelled.

– derivatives
exhaustedly adverb,
exhauster noun,
exhaustibility /-ˈbɪlɪti/ noun,
exhaustible adjective,
exhaustingly adverb.
– origin C16: from L. exhaust-, exhaurire ‘drain out’.
'exhaust' also found in these Oxford entries:

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