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Exhaust, exhaustive, or exhaustion may refer to:

Law

• Exhaustion of intellectual property rights, limits to intellectual property rights in patent and copyright law
  • Exhaustion doctrine, in patent law
  • Exhaustion doctrine under U.S. law, in patent law
• Exhaustion of remedies, restrictions on opening a new lawsuit while an original suit is pending

Mathematics

• Brute-force attack, a cryptanalytic attack, also known as exhaustive key search
• Collectively exhaustive, in probability and set theory, a collection of sets whose union equals the complete space
• Exhaustion by compact sets, in analysis, a sequence of compact sets that converges on a given set
• Method of exhaustion, in geometry, finding the area of a shape by approximating it with polygons
• Proof by exhaustion, proof by examining all individual cases

Medicine

• Fatigue, a weariness caused by exertion
• Adrenal exhaustion or hypoadrenia, a hypothesized maladaption of the adrenal glands
• Heat exhaustion or hyperthermia, a medical condition where the body is unable to control its accumulation of heat
• Nervous exhaustion or neurasthenia, a nineteenth-century diagnosis encompassing fatigue, anxiety, and depression

Technology

• Exhaust, in steam engines, steam released from a cylinder
• Exhaust brake, a method of slowing diesel engines
• Exhaust gas, a gas which occurs as a result of combustion of fuel
• Exhaust manifold, a structure collecting an engine's exhaust outlets
• Exhaust system, a mechanism for venting exhaust gases from an internal combustion engine
• Exhaust velocity, a measure of engine efficiency
• Data exhaust, the trail of data left by users during online activity

Other uses

• Emotional exhaustion
• Exhaust (band), a clarinet, drum, and tape trio in Montreal, Canada
  • Exhaust (album), the band's 1998 self-titled album
• Exhaust date, the projected date that a telecommunications area code will have assigned all of its numbers
• Exhaustive ballot, a multi-round voting system

• Disambiguation pages