English dictionary

radical

/'r/&/d/I/k/@/l/

Definitions, examples, synonyms and antonyms from WordNet 3.0.

adjective

of or relating to or constituting a linguistic root

adj.pert

Examples
A radical verb form.

Source: WordNet 3.0
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

adj.all

Examples
Radical leaves.

Synonyms basal

Antonyms cauline

Source: WordNet 3.0
Of or pertaining to the root; proceeding directly from the root.

adjective

Source: webster1913

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

noun.substance

Synonyms chemical group group

Source: WordNet 3.0
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

noun.substance

Examples
In the body free radicals are high-energy particles that ricochet wildly and damage cells.

Synonyms free radical

Source: WordNet 3.0
a person who has radical ideas or opinions

noun.person

Source: WordNet 3.0
(mathematics) a quantity expressed as the root of another quantity

noun.quantity

Source: WordNet 3.0
a character conveying the lexical meaning of a logogram

noun.communication

Source: WordNet 3.0
(linguistics) the form of a word after all affixes are removed

noun.communication

Synonyms base root root word stem theme

Source: WordNet 3.0
A primitive word; a radix, root, or simple, underived, uncompounded word; an etymon.

noun

Source: webster1913