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radical Definition

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radical
adjective(rad-i-cal)
(used of opinions and actions) far beyond the norm
Synonyms: extremist, ultra,
Examples:
Radical opinions on education.
radical
adjective(rad-i-cal)
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
Synonyms: basal,
Antonyms: cauline,
Examples:
Radical leaves.
radical
noun(rad-i-cal)
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
Synonyms: free radical,
Examples:
In the body free radicals are high-energy particles that ricochet wildly and damage cells.
radical
noun(rad-i-cal)
(linguistics) the form of a word after all affixes are removed
Synonyms: base, root, root word, stem, theme,
radical
adjective(rad-i-cal)
markedly new or introducing radical change
Synonyms: revolutionary,
Examples:
Radical political views.
radical
noun(rad-i-cal)
(chemistry) two or more atoms bound together as a single unit and forming part of a molecule
Synonyms: chemical group, group,
radical
noun(rad-i-cal)
a character conveying the lexical meaning of a logogram
radical
noun(rad-i-cal)
a person who has radical ideas or opinions
radical
adjective(rad-i-cal)
arising from or going to the root or source
Examples:
A radical flaw in the plan.
radical
noun(rad-i-cal)
(mathematics) a quantity expressed as the root of another quantity
radical
adjective(rad-i-cal)
of or relating to or constituting a linguistic root
Examples:
A radical verb form.

Words Related to radical!

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radical Examples by Brain Bank Users