radical

Definitions of radical in various dictionaries:

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

noun - an atom or group of atoms with at least one unpaired electron

noun - a person who has radical ideas or opinions

noun - (mathematics) a quantity expressed as the root of another quantity

noun - a character conveying the lexical meaning of a logogram

noun - (linguistics) the form of a word after all affixes are removed

adj - (used of opinions and actions) far beyond the norm

adj - markedly new or introducing radical change

adj - arising from or going to the root or source

adj - of or relating to or constituting a linguistic root

adj - especially of leaves

Arising from or going to a root or source; basic: a radical flaw in a plan; chose the radical solution of starting all over again.

Departing markedly from the usual or customary; extreme: radical opinions on education.

Favoring or effecting fundamental or revolutionary changes in current practices, conditions, or institutions: radical political views.

Linguistics.

Arising from the root or its crown: radical leaves.

One who advocates fundamental or revolutionary changes in current practices, conditions, or institutions: radicals seeking to overthrow the social order.

The root of a quantity as indicated by the radical sign.

R An atom or a group of atoms with at least one unpaired electron.

See root1 (n.

noun - a group of atoms that acts as a unit in chemical compounds