Radical


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 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 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

Chemistry

*Radical (chemistry) or free radical, atomic or molecular species with unpaired electrons

Linguistics

*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 root

ociety

*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

*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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  • radical — radical, ale, aux [ radikal, o ] adj. et n. • fin XVe; bas lat. radicalis, de radix « racine » I ♦ Adj. 1 ♦ Qui tient à l essence, au principe (d une chose, d un être). ⇒ foncier, fondamental; absolu. « L instinct le plus radical dans l homme, le …   Encyclopédie Universelle

  • radical — radical, ale (ra di kal, ka l ) adj. 1°   Terme de botanique. Qui appartient à la racine, qui part de la racine. Pédoncules radicaux.    Feuilles radicales, celles qui naissent si près de la racine, qu elles semblent en sortir et non de la tige.… …   Dictionnaire de la Langue Française d'Émile Littré

  • Radical — Rad i*cal (r[a^]d [i^]*kal), a. [F., fr. L. radicalis having roots, fr. radix, icis, a root. See {Radix}.] 1. Of or pertaining to the root; proceeding directly from the root. [1913 Webster] 2. Hence: Of or pertaining to the root or origin;… …   The Collaborative International Dictionary of English

  • radical — RADICÁL, Ă, radicali, e, adj., s.m. I. adj. 1. De bază, fundamental, esenţial. ♦ (Adverbial) Din temelie, cu desăvârşire, complet. ♦ (Despre tratamente, leacuri) Care vindecă în întregime, complet. 2. Care preconizează reforme adânci, acţiuni… …   Dicționar Român

  • Radical — Saltar a navegación, búsqueda El término radical viene del latín radix ( raíz ), significa así de raíz o de base, refiriéndose sobre todo a un punto de vista profundo, sustancial, más aún si es aplicado a alguna convicción, práctica, análisis o… …   Wikipedia Español

  • Radical — Rad i*cal (r[a^]d [i^]*kal), n. 1. (Philol.) (a) A primitive word; a radix, root, or simple, underived, uncompounded word; an etymon. (b) A primitive letter; a letter that belongs to the radix. [1913 Webster] The words we at present make use of,… …   The Collaborative International Dictionary of English

  • radical — adjetivo 1. De la raíz: El morfema radical de amar es am . 2. (antepuesto / pospuesto) Que se produce de manera total, sin ninguna limitación: cambio radical. Las radicales reformas emprendidas por el Ayuntamiento han levantado protestas. Se ha… …   Diccionario Salamanca de la Lengua Española

  • radical — [rad′i kəl] adj. [ME < LL radicalis < L radix (gen. radicis), ROOT1] 1. a) of or from the root or roots; going to the foundation or source of something; fundamental; basic [a radical principle] b) extreme; thorough [a radical change in one… …   English World dictionary

  • radical — (Del lat. radix, īcis, raíz). 1. adj. Perteneciente o relativo a la raíz. 2. Fundamental, de raíz. 3. Partidario de reformas extremas, especialmente en sentido democrático. U. t. c. s.) 4. Extremoso, tajante, intransigente. 5. Bot. Dicho de… …   Diccionario de la lengua española

  • Radical 2 — meaning vertical stroke is one of six of the 214 Kangxi radicals that are composed of only one stroke.In the Kangxi Dictionary there are only 21 characters (out of 40 000) to be found under this radical.Radical 1 (橫 héng) is one of the Eight… …   Wikipedia