radical

adj. & n.
—adj.
1 of the root or roots; fundamental (a radical error).
2 far-reaching; thorough; going to the root (radical change).
3 a advocating thorough reform; holding extreme political views; revolutionary. b (of a measure etc.) advanced by or according to principles of this kind.
4 forming the basis; primary (the radical idea).
5 Math. of the root of a number or quantity.
6 (of surgery etc.) seeking to ensure the removal of all diseased tissue.
7 of the roots of words.
8 Mus. belonging to the root of a chord.
9 Bot. of, or springing direct from, the root.
10 hist. belonging to an extreme section of the Liberal party.
11 US hist. seeking extreme anti-South action at the time of the Civil War.
—n.
1 a person holding radical views or belonging to a radical party.
2 Chem. a a free radical. b an element or atom or a group of these normally forming part of a compound and remaining unaltered during the compound's ordinary chemical changes.
3 the root of a word.
4 a fundamental principle; a basis.
5 Math. a a quantity forming or expressed as the root of another. b a radical sign.
Phrases and idioms:
radical sign indicating the square, cube, etc., root of the number following.
Derivatives:
radicalism n. radicalize v.tr. & intr. (also -ise). radicalization n. radically adv. radicalness n.
Etymology: ME f. LL radicalis f. L radix radicis root

Useful english dictionary. 2012.

Synonyms:

Look at other dictionaries:

  • 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 — (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… …   Wikipedia

  • 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

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