Exhaust, exhaustive, or exhaustion may refer to:
Law
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Exhaustion of intellectual property rights, limits to intellectual property rights in patent and copyright law
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Exhaustion doctrine, in patent law
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Exhaustion doctrine under U.S. law, in patent law
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Exhaustion of remedies, restrictions on opening a new lawsuit while an original suit is pending
Mathematics
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Brute-force attack, a cryptanalytic attack, also known as exhaustive key search
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Collectively exhaustive, in probability and set theory, a collection of sets whose union equals the complete space
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Exhaustion by compact sets, in analysis, a sequence of compact sets that converges on a given set
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Method of exhaustion
The method of exhaustion (; ) is a method of finding the area of a shape by inscribing inside it a sequence of polygons whose areas converge to the area of the containing shape. If the sequence is correctly constructed, the difference in area b ...
, in geometry, finding the area of a shape by approximating it with polygons
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Proof by exhaustion, proof by examining all individual cases
Medicine
*Exhaustion or
fatigue (medical)
Fatigue describes a state of tiredness that does not resolve with rest or sleep. In general usage, fatigue is synonymous with extreme tiredness or exhaustion that normally follows prolonged physical or mental activity. When it does not resolve ...
, a weariness caused by exertion
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Adrenal exhaustion
Adrenal fatigue or hypoadrenia is a pseudo-scientific term used by alternative medicine providers to suggest that the adrenal glands are exhausted and unable to produce adequate quantities of hormones, primarily cortisol, due to chronic stress o ...
or hypoadrenia, a hypothesized maladaption of the adrenal glands
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Heat exhaustion or hyperthermia, a medical condition where the body is unable to control its accumulation of heat
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Nervous exhaustion or neurasthenia, a nineteenth-century diagnosis encompassing fatigue, anxiety, and depression
Technology
*Exhaust, in
steam engine
A steam engine is a heat engine that performs mechanical work using steam as its working fluid. The steam engine uses the force produced by steam pressure to push a piston back and forth inside a cylinder. This pushing force can be ...
s, steam released from a cylinder
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Exhaust brake, a method of slowing diesel engines
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Exhaust gas
Exhaust gas or flue gas is emitted as a result of the combustion of fuels such as natural gas, gasoline (petrol), diesel fuel, fuel oil, biodiesel blends, or coal. According to the type of engine, it is discharged into the atmosphere through a ...
, a gas which occurs as a result of combustion of fuel
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Exhaust manifold, a structure collecting an engine's exhaust outlets
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Exhaust system, a mechanism for venting exhaust gases from an internal combustion engine
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Exhaust velocity
Specific impulse (usually abbreviated ) is a measure of how efficiently a reaction mass engine (a rocket using propellant or a jet engine using fuel) creates thrust. For engines whose reaction mass is only the fuel they carry, specific impulse is ...
, a measure of engine efficiency
Other uses
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Exhaust (band), a clarinet, drum, and tape trio in Montreal, Canada
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''Exhaust'' (album), the band's 1998 self-titled album
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Exhaust date, the projected date that a telecommunications area code will have assigned all of its numbers
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Exhaustive ballot, a multi-round voting system
{{disambiguation