- Radical
Radical (from Latin "radicis", genitive of "radix" "root") can refer to many different things and concepts.
Mathematics
*The symbol √ used to indicate the
square root ornth root
*Radical of an algebraic group , a concept in algebraic group theory
*Radical of an ideal , an important concept in abstract algebra
*Radical of an integer , a concept in number theory
*Symmetric bilinear form , a concept in linear algebra
*Radical of a Lie algebra , a concept in Lie theoryChemistry
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Radical (chemistry) or free radical, atomic or molecular species with unpaired electronsLinguistics
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Radical consonant , which involves the root of the tongue
*Radical (Chinese character) , part of a Chinese character under which it is indexed in a dictionary (also called bùshǒu 部首)
*One of the three consonants in a Semitic trilateral or quadrilateral rootociety
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Political radicalism
**Radicalism (historical) , the Radical Movement which began in late 18th century Britain and spread to continental Europe and Latin America in the 19th century
**Radical left , another term for the far left
**Radical right , another term for the far right
**Extremism , political standpoints that are perceived as revolutionary or extreme*
Radical Whigs , influential early writers on Radicalism
*Radical Republican (USA) , a member of an influential group of American politicians during the Civil War reconstruction
*Radical Party , one of a number of political parties around the world
*Radicals (UK) , parliamentary progressives who were part of the nineteenth-century Liberal coalition
*Industrial Radicals , members of the fictional Industrial Radical Party
*Religious radicalism Businesses and organizations
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Radical Sportscars , an English sports car maker
*Radical Entertainment , a video game developer based in Vancouver, Canada
*Free Radical Design , a video game developer based in Nottingham, England
*Free Radicals (band) , a jazz-funk musical group from Houston, TX
*Radical Matters , a record label
*Free Radical Centre Music albums
*"Radical" (Smack album), Smack's fourth studio album, released in 1988
Other
*In
cabinet making , another way of saying external plinthfact|date=February 2008
*Radical Baroque , in architecture
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