Radical

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Radical (from Late Latin radicalis "of roots", from Latin radix "root") may refer to:

in science and mathematics

• Radical (chemistry) is an atom, molecule, or ion which is likely to take part in chemical reactions.
• The symbol √ used to indicate the square root or nth root
• Radical of an algebraic group, a concept in algebraic group theory
• Radical of an ideal, an important concept in abstract algebra
• Radical of a ring
• Radical of a module
• Jacobson radical
• Nilradical of a ring
• Nilradical of a Lie 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 theory

in linguistics

• of a root (linguistics)
• 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 root
• Radical consonant, which involves the root of the tongue

in politics

• 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 Reformation, an Anabaptist movement concurrent with the Protestant Reformation
• Radical Republicans, 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
• Radical feminism, a current within feminism that focuses on patriarchy as a system of power
• Radical veganism, a radical interpretation of veganism, usually combined with anarchism

in culture

• Radical chic, a term coined by Tom Wolfe to describe the pretentious adoption of radical causes by celebrities, socialites, and high society

in art

• Radical Baroque, in architecture

brands, titles and proper names

• 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
• Free Radical Centre
• Radical (Smack album), Smack's fourth studio album, released in 1988

[edit] See also

• Rad

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