The meaning of RADICAL is of, relating to, or proceeding from a root. How to use radical in a sentence.

RADICAL definition: 1. believing or expressing the belief that there should be great or extreme social or political…. Learn more.

a person holding radical views, esp. one favoring fundamental social or economic change

Relating to or advocating fundamental or revolutionary changes in current practices, conditions, or institutions: radical politics; a radical political theorist.

The indicated root of a quantity or quantities, shown by an expression written under the radical sign.

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 now unusual …

Dec 11, 2025 · Adjective [edit] radical (comparative more radical, superlative most radical) Favoring fundamental change, or change at the root cause of a matter.

Definition of radical adjective from the Oxford Advanced Learner's Dictionary. relating to the most basic and important parts of something; complete and detailed synonym far-reaching. This document …

RADICAL definition: of or going to the root or origin; fundamental. See examples of radical used in a sentence.

In chemistry, a radical is an atom, molecule, or ion that has unpaired valence electrons or an open electron shell, and therefore may be seen as having one or more "dangling" covalent bonds.