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

If something is considered extremist or very different from anything that has come before it, call it radical. The noun, radical, comes from the Latin radix "root," and in fact, radical and root are …

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

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

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

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 …