Complement 74139 213510916 2008-05-19T17:47:18Z 78.86.9.206 {{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]] <!-- the difference in apostrophes is correct --> *[[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 &mdash; 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]] {{disambig}} [[cs:Komplement]] [[de:Komplement]] [[fr:Complément]] [[it:Complemento]] [[nl:Complement]] [[pl:Dopełnienie]] [[ru:Комплемент]] [[sk:Komplement]] [[fi:Komplementti]]