# Radical

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**Radical** (from Latin: **radix**, root) may refer to:

## Politics and ideology

### Politics

- [Classical radicalism](/source/Classical_radicalism), the ideology and movement started in late 18th century Britain and spread to continental Europe and Latin America in the 19th century
- [Radical politics](/source/Radical_politics), the political intent of fundamental societal change
- [Radical Party (disambiguation)](/source/Radical_Party_(disambiguation)), several political parties
- [Radicals (UK)](/source/Radicals_(UK)), a British and Irish grouping in the early to mid-19th century
- [Radicalization](/source/Radicalization)
- Politicians from the [Radical Civic Union](/source/Radical_Civic_Union)

### Ideologies

- [Radical chic](/source/Radical_chic), a term coined by Tom Wolfe to describe the pretentious adoption of radical causes
- [Radical feminism](/source/Radical_feminism), a perspective within feminism that focuses on patriarchy
- [Radical Islam](/source/Radical_Islam), or Islamic extremism
- [Radical Christianity](/source/Radical_Christianity)
- [Radical veganism](/source/Radical_veganism), a radical interpretation of veganism, usually combined with anarchism
- [Radical Reformation](/source/Radical_Reformation), an Anabaptist movement concurrent with the Protestant Reformation

## Science and mathematics

### Science

- [Radical (chemistry)](/source/Radical_(chemistry)), an atom, molecule, or ion with unpaired valence electron(s)
- [Radical surgery](/source/Radical_surgery), where diseased tissue or lymph nodes are removed from a diseased organ

### Mathematics

- [Radical expression](/source/Radical_expression) involving roots, also known as an *n*th root - [Solution in radicals](/source/Solution_in_radicals)
- [Radical symbol](/source/Radical_symbol) (√), used to indicate the square root and other roots
- [Radical of an algebraic group](/source/Radical_of_an_algebraic_group), a concept in algebraic group theory
- [Radical of an ideal](/source/Radical_of_an_ideal), an important concept in abstract algebra
- [Radical of a ring](/source/Radical_of_a_ring), an ideal of "bad" elements of a ring - [Jacobson radical](/source/Jacobson_radical), consisting of those elements in a ring R that annihilate all simple right R-modules - [Nilradical of a ring](/source/Nilradical_of_a_ring), a nilpotent ideal which is as large as possible
- [Radical of a module](/source/Radical_of_a_module), a component in the theory of structure and classification
- [Radical of an integer](/source/Radical_of_an_integer), in number theory, the product of the primes which divide an integer
- [Radical of a Lie algebra](/source/Radical_of_a_Lie_algebra), a concept in Lie theory - [Nilradical of a Lie algebra](/source/Nilradical_of_a_Lie_algebra), a nilpotent ideal which is as large as possible
- Left (or right) radical of a [bilinear form](/source/Bilinear_form), the subspace of all vectors left (or right) orthogonal to every vector

## Linguistics

- [Root (linguistics)](/source/Root_(linguistics)), in morphology - Radical, a [Semitic root](/source/Semitic_root) consonant
- [Radical (Chinese characters)](/source/Radical_(Chinese_characters)), a glyph component
- [Radical consonant](/source/Radical_consonant), in phonology

## Arts and entertainment

### Music

- [*Radical* (mixtape)](/source/Radical_(mixtape)), by Odd Future, 2010
- [*Radical* (Every Time I Die album)](/source/Radical_(Every_Time_I_Die_album)), 2021
- [*Radical* (Smack album)](/source/Radical_(Smack_album)), 1988
- ["Radicals" (song)](/source/Radicals_(song)), a song by Tyler, The Creator from the 2011 album *Goblin*
- "Radical", an instrumental by [Dyro](/source/Dyro) and [Dannic](/source/Dannic), 2014

### Architecture and design

- [Radical period (design)](/source/Radical_period_(design)), a period in late 1960s Italian design
- [Radical Baroque](/source/Radical_Baroque), an architectural style

### Literature

- *[Radical: Taking Back Your Faith from the American Dream](/source/Radical:_Taking_Back_Your_Faith_from_the_American_Dream)*, a 2010 book by Christian pastor David Platt
- *[Radical: My Journey out of Islamist Extremism](/source/Radical:_My_Journey_out_of_Islamist_Extremism)*, a 2012 memoir by British activist Maajid Nawaz

### Film

- [*Radical* (film)](/source/Radical_(film)), a 2023 Spanish language film

## Other uses

- [Murphy Radical](/source/Murphy_Radical), a Canadian light aircraft design
- [Radical, Missouri](/source/Radical,_Missouri), U.S., a ghost town
- [Radical Sportscars](/source/Radical_Sportscars), a British sports car maker
- [Radical Entertainment](/source/Radical_Entertainment), a Canadian video game developer
- [Radical.fm](/source/Radical.fm), a digital music streaming service
- *[Radical Software](/source/Radical_Software)*, American art journal started in 1970

## See also

- [The Radicalz](/source/The_Radicalz), a World Wrestling Federation stable
- [Radical center (disambiguation)](/source/Radical_center_(disambiguation))
- [Radical left (disambiguation)](/source/Radical_left_(disambiguation))
- [Radical right (disambiguation)](/source/Radical_right_(disambiguation))
- [Radikal (disambiguation)](/source/Radikal_(disambiguation))
- [Radicle](/source/Radicle), the first part of a seedling

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Adapted from the Wikipedia article [Radical](https://en.wikipedia.org/wiki/Radical) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Radical?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.