Elimination
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{{Wiktionary}}
'''Elimination''' can refer to several things:
*In [[chemistry]], an '''[[elimination reaction]]''' is a one- or two-step [[organic chemistry|organic]] [[chemical reaction|reaction]] in which two functional groups combine to form a larger organic product with a new bond such as an [[ester]], [[amide]], or [[ether]]. There is also a small product; e.g., [[water]] or an [[acid]].
*In [[pharmacology]], '''elimination''' (or [[clearance (medicine)|clearance]]) refers to all the processes that remove a drug or other foreign agent from the body. These include [[excretion]] and [[metabolism]].
*In [[biology]] '''elimination''' refers to the removal of undigested or unchanged materials from the body. It is different from [[excretion]] because excreted materials are [[metabolic wastes]] and byproducts. [[Cellulose]] or [[dietary fiber]] is an example of material that is eliminated but not excreted.
*In [[epidemiology]] '''elimination''' refers to the destruction of an [[infectious disease]] and its causal organism from a region of the world. It is used in contrast to [[Eradication of infectious diseases|eradication]], which is the complete destruction of an infectious disease (or at least its wild form) from anywhere in the world.
*In [[logic]], '''elimination''' refers to the [[rule of inference]] known as the [[disjunctive syllogism]].
*'''[[Single elimination]]''' and '''[[double elimination]]''' are styles of tournament competition.
*'''[[Elimination (arcade game) | Elimination!]]''' is a 1974 arcade game by [[Atari | Atari Inc.]] subsidiary [[Key Games]].
*'''Elimination''' is a variant of the "lifestyle-invading" game [[Assassin (game)|Assassin]], played with clothespins.
*'''[[Eliminator]]''' is [[ZZ Top]]'s 8th studio album, released in [[1983]].
*'''[[Elimina(Jughead's Revenge album)|Elimination]]''' is [[Jughead's Revenge]]'s 3rd studio album, released in [[1994]].
*'''Elimination''' is the second song from [[Overkill (band)|Overkill]]'s album [[The Years of Decay]]
*'''Elimination''' is a thrash metal band from Ipswich, United Kingdom.
* In mathematics, eliminating a variable from a system of relations means obtaining a system of the same kind that has the same solutions over the remaining variables. Depending on the kind of system, various elimination techniques exist:
**'''[[Gaussian elimination]]''' is a [[matrix (mathematics)|matrix]] operation, that produces "reduced row echelon form", with steps of elimination over linear equalities;
**[[Fourier-Motzkin elimination]] for systems of linear ''inequalities''.
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