Radical (from Latin: radix, root) may refer to:
Politics and ideology
Politics
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Classical radicalism, the Radical Movement that began in late 18th century Britain and spread to continental Europe and Latin America in the 19th century
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Radical politics, the political intent of fundamental societal change
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Radical Party (disambiguation), several political parties
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Radicals (UK), a British and Irish grouping in the early to mid-19th century
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Radicalization
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Politicians from the Radical Civic Union
Ideologies
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Radical chic, a term coined by Tom Wolfe to describe the pretentious adoption of radical causes
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Radical feminism, a perspective within feminism that focuses on patriarchy
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Radical Islam, or Islamic extremism
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Radical Christianity
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Radical veganism, a radical interpretation of veganism, usually combined with anarchism
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Radical Reformation, an Anabaptist movement concurrent with the Protestant Reformation
Science and mathematics
Science
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Radical (chemistry), an atom, molecule, or ion with unpaired valence electron(s)
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Radical surgery, where diseased tissue or lymph nodes are removed from a diseased organ
Mathematics
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Radical expression involving roots, also known as an nth root
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Radical symbol (√), used to indicate the square root and other roots
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Radical of an algebraic group, a concept in algebraic group theory
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Radical of an ideal, an important concept in abstract algebra
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Radical of a ring, an ideal of "bad" elements of a ring
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Jacobson radical, consisting of those elements in a ring R that annihilate all simple right R-modules
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Nilradical of a ring, a nilpotent ideal which is as large as possible
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Radical of a module, a component in the theory of structure and classification
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Radical of an integer, in number theory, the product of the primes which divide an integer
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Radical of a Lie algebra, a concept in Lie theory
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Nilradical of a Lie algebra, a nilpotent ideal which is as large as possible
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Left (or right) radical of a bilinear form, the subspace of all vectors left (or right) orthogonal to every vector
Linguistics
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Root (linguistics), also called a "radical", the form of a word after any prefixes and suffixes are removed
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Radical (Chinese characters), part of a Chinese character
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Radical consonant, a pharyngeal consonant
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Radical, one of the three consonants in a Semitic root
Arts and entertainment
Music
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Radical (mixtape), by Odd Future, 2010
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Radical (Every Time I Die album), 2021
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Radical (Smack album), 1988
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"Radicals" (song), a song by Tyler, The Creator from the 2011 album Goblin
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"Radical", an instrumental by Dyro and Dannic, 2014
Architecture and design
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Radical period (design), a period in late 1960s Italian design
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Radical Baroque, an architectural style
Literature
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, a 2010 book by Christian pastor David Platt
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, a 2012 memoir by British activist Maajid Nawaz
Film
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Radical (film), a 2023 Spanish language film
Other uses
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Murphy Radical, a Canadian light aircraft design
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Radical, Missouri, U.S., a ghost town
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Radical Sportscars, a British sports car maker
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Radical Entertainment, a Canadian video game developer
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Radical.fm, a digital music streaming service
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Radical Software, American art journal started in 1970
See also
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The Radicalz, a World Wrestling Federation stable
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Radical center (disambiguation)
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Radical left (disambiguation)
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Radical right (disambiguation)
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Radikal (disambiguation)
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Radicle, the first part of a seedling