RADICAL definition: of or going to the root or origin; fundamental. See examples of radical used in a sentence. If something is considered extremist or very different from anything that has come before it, call it radical. RADICAL definition: 1. believing or expressing the belief that there should be great or extreme social or political.. Learn more.

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Definition of radical adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Dec 18, 2025ย ยท radical (comparative more radical, superlative most radical) Favoring fundamental change, or change at the root cause of a matter. An individual atom or element as a constituent of a compound was formerly termed a simple radical, as distinct from a group or compound radical. The use of the word for single atoms is. thoroughgoing, complete, or extreme: a radical change in policy. Government favoring drastic or extreme political, economic, or social reforms: radical politics. The meaning of RADICAL is of, relating to, or proceeding from a root. How to use radical in a sentence. RADICAL meaning: 1 : very new and different from what is traditional or ordinary; 2 : very basic and important

The meaning of RADICAL is of, relating to, or proceeding from a root. How to use radical in a sentence. RADICAL meaning: 1 : very new and different from what is traditional or ordinary; 2 : very basic and important

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