Definitions for radical

Definitions for (noun) radical

Main entry: stem, theme, base, root, root word, radical

Definition: (linguistics) the form of a word after all affixes are removed

Usage: thematic vowels are part of the stem

Main entry: radical

Definition: a character conveying the lexical meaning of a logogram

Main entry: radical

Definition: a person who has radical ideas or opinions

Main entry: radical

Definition: (mathematics) a quantity expressed as the root of another quantity

Main entry: group, radical, chemical group

Definition: (chemistry) two or more atoms bound together as a single unit and forming part of a molecule

Main entry: free radical, radical

Definition: an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule that has lost an electron and will stabilize itself by stealing an electron from a nearby molecule

Usage: in the body free radicals are high-energy particles that ricochet wildly and damage cells

Definitions for (adj) radical

Main entry: basal, radical

Definition: especially of leaves; located at the base of a plant or stem; especially arising directly from the root or rootstock or a root-like stem

Usage: basal placentation; radical leaves

Main entry: extremist, ultra, radical

Definition: (used of opinions and actions) far beyond the norm

Usage: extremist political views; radical opinions on education; an ultra conservative

Main entry: radical, revolutionary

Definition: markedly new or introducing radical change

Usage: a revolutionary discovery; radical political views

Main entry: radical

Definition: arising from or going to the root or source

Usage: a radical flaw in the plan

Main entry: radical

Definition: of or relating to or constituting a linguistic root

Usage: a radical verb form

Visual thesaurus for radical