Complement
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2008-05-19T17:47:18Z
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{{distinguish|compliment}}
{{wiktionarypar2|complement|complementary}}
In many different fields, the '''complement''' of ''X'' is something that together with ''X'' makes a complete whole, something that supplies what ''X'' lacks.
'''Complement''' may refer to:
*complement, binary representations of negative values in computer science
**[[Signed number representations#Ones.27 complement|ones' complement]]
**[[two's complement]]
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*[[complement (complexity)]], relating to decision problems and complexity classes
*[[complement good]], a good often consumed together with another good in economics
*[[complement (linguistics)]], a word or phrase having a particular syntactic role
*complementary, a type of [[Opposite (semantics)|opposite]] in lexical semantics (sometimes called an antonym). See: [[Opposite (semantics)#Complementaries]]
*[[complement (mathematics)]] has many meanings — see this disambiguation page
**[[complementary angles]], in geometry
*[[complement (music)]], an interval that when added to another spans an octave
*[[complementary color]], in painting and optilsacs
*[[complementary experiments]], in physics
*[[method of complements]], a method to compute addition and subtraction in computer science
*[[phonetic complement]]
*''Ship's complement'', the number of persons in a ship's full company, including both commissioned officers and crew
==Biology==
*[[complement system]], a cascade of proteins in the blood that form part of innate immunity
*[[complementary DNA]], DNA reverse transcribed from a mature mRNA template
*[[complementarity (molecular biology)]], a property whereby double stranded nucleic acids pair with each other
*[[complementation (genetics)]], a test to determine if independent recessive mutant phenotypes are caused by mutations in the same gene or in different genes
==See also==
*[[Complementarity]]
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[[it:Complemento]]
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[[pl:Dopełnienie]]
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