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

The radical symbol, also known as the square root symbol, is used in math to represent the square root operator and to represent taking the nth-root of an expression.

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.

Radical (chemistry), an atom, molecule, or ion with unpaired valence electron (s) Radical surgery, where diseased tissue or lymph nodes are removed from a diseased organ

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

Jan 14, 2026 · Adjective [edit] 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 …

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 …

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