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1. Dictionary

   Rad·i·cal

   /ˈradək(ə)l/

   

   adjective

   • 1. (especially of change or action) relating to or affecting the fundamental nature of something; far-reaching or thorough: "a radical overhaul of the existing regulatory framework" Similar thoroughgoingthoroughcompletetotalentireabsoluteuttercomprehensiveexhaustiveroot-and-branchsweepingfar-reachingwide-rangingextensiveprofounddrasticsevereseriousmajordesperatestringentviolentforcefulrigorousdraconianOpposite superficial
   • ▪ forming an inherent or fundamental part of the nature of someone or something: "the assumption of radical differences between the mental attributes of literate and nonliterate peoples" Similar fundamentalbasicessentialquintessentialinherentinnatestructuraldeep-seatedintrinsicorganicconstitutiverootOpposite minor
   • ▪ (of surgery or medical treatment) thorough and intended to be completely curative.
   • 2. advocating or based on thorough or complete political or social change; representing or supporting an extreme or progressive section of a political party: "a radical activist" Similar revolutionaryprogressivereformingreformistprogressivistrevisionistleftistleft-wingsocialistanticapitalistextremistfanaticalmilitantdiehardinformal:wokeright-oninformal, derogatory:commieBolshevikleftyredpinkbolshieOpposite conservativereactionarymoderate
   • ▪ characterized by independence of or departure from tradition; innovative or unorthodox: "the daring, avant-garde spirit of the music was too radical for the conservative audience"
   • 3. denoting or relating to the roots of a word.
   • ▪ belonging to the root of a chord.
   • 4. of the root of a number or quantity.
   • 5. of, or springing direct from, the root or stem base of a plant.
   • 6. very good; excellent: informal North American "Okay, then. Seven o'clock. Radical!"

   noun

   • 1. a person who advocates thorough or complete political or social reform; a member of a political party or part of a party pursuing such aims.
   • 2. a group of atoms behaving as a unit in a number of compounds.
   • 3. the root or base form of a word.
   • ▪ any of the basic set of 214 Chinese characters constituting semantically or functionally significant elements in the composition of other characters and used as a means of classifying characters in dictionaries.
   • 4. a quantity forming or expressed as the root of another.
   • ▪ a radical sign.

   Word Origin late Middle English (in the senses ‘forming the root’ and ‘inherent’): from late Latin radicalis, from Latin radix, radic- ‘root’.

   Derivatives

   • 1. radicalness noun

   Scrabble Points: 10

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2. www.dictionary.com › browse › radical&RADICAL Definition & Usage Examples | Dictionary.com

   www.dictionary.com › browse › radical&

   • Cached

   favoring drastic political, economic, or social reforms: radical ideas; radical and anarchistic ideologues. favoring, supporting, or representing extreme forms of religious fundamentalism: radical fundamentalists and their rejection of modern science.

3. www.oxfordlearnersdictionaries.com › us › definitionradical adjective - Definition, pictures, pronunciation and ...

   www.oxfordlearnersdictionaries.com › us › definition

   • Cached

   Check pronunciation: radical. Definition of radical adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

4. tutorial.math.lamar.edu › Classes › AlgAlgebra - Radicals - Pauls Online Math Notes

   tutorial.math.lamar.edu › Classes › Alg

   • tutorial.math.lamar.edu
   •   › Algebra
   •   › Preliminaries

   Nov 16, 2022 · In this section we will define radical notation and relate radicals to rational exponents. We will also give the properties of radicals and some of the common mistakes students often make with radicals. We will also define simplified radical form and show how to rationalize the denominator.

5. www.wordreference.com › definition › radicalradical - WordReference.com Dictionary of English

   www.wordreference.com › definition › radical

   • Cached

   thoroughgoing or extreme, esp. as regards change from accepted or traditional forms: a radical change in the policy of a company. Government favoring drastic political, economic, or social reforms: radical ideas; radical and anarchistic ideologues. forming a basis or foundation.

6. www.oed.com › dictionary › radical_adjradical, adj. & n. meanings, etymology and more | Oxford ...

   www.oed.com › dictionary › radical_adj

   • Cached

   radical adjective & noun. Meaning & use. 1. Of, belonging to, or from a root or roots; fundamental to… 2. Relating to or forming the root, basis, or foundation of… 3. Mathematics. Originally: † (of a number) irrational… 4. Linguistics. Of, belonging to, or relating to the root of a… 5. † Astrology and (occasionally) Astronomy. Belonging to the… 6.

7. www.betterwordsonline.com › dictionary › radicalRadical - Definition, Meaning, Synonyms, Etymology

   www.betterwordsonline.com › dictionary › radical

   • Cached

   Dictionary definition of radical. Characterized by a departure from established norms, traditions, or conventional beliefs, often in a fundamental or extreme way. "The artist's work was considered radical, pushing the boundaries of traditional art." Detailed meaning of radical.

8. www.oxfordreference.com › display › 10Radical - Oxford Reference

   www.oxfordreference.com › display › 10

   • Cached

   Overview. radical. Quick Reference. 1 Relating to, consisting of, or going to the root or fundament; necessitating, entailing, or favouring fundamental social, economic, or political change. n. 2 A group of atoms that is unstable in the free state but when bound together in a molecule behaves as a single unit, such as the acetyl group —COCH 3.