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.

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

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 …

Dec 18, 2025 · Adjective [edit] radical (comparative more radical, superlative most radical) Favoring fundamental change, or change at the root cause of a matter.

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

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