Radical

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Radical is derived from the Latin word radix, which means "root". In various fields of endeavor, it can mean:

Sciences

in chemistry, either an atom or molecule with at least one unpaired electron, or a group of atoms, charged or uncharged, that act as a single entity in reaction. These two definitions are not functionally identical. (see radical (chemistry)).
in mathematics:
- the n-th radical or root of a number a, written as <math>\sqrt[n]{a}</math>, which is a number whose n-th power is a (see radical (mathematics)).
- the radical of an algebraic group is a concept in algebraic group theory.
- the radical of an ideal is an important concept in abstract algebra.
in linguistics, a radical consonant involves the root of the tongue.
in grammatology, it is part of a Chinese character (see radical (Chinese character)).

Social sciences

in sociology:
- one who advocates thoroughgoing analysis or change "at the root"
in politics:
- can refer to a supporter of a revolutionary social movement
- can refer to the Radicalism (historical) movement which developed in 19th century Britain with the primary aim of electoral reform
- can refer to Radicalism (historical) left wing liberal movements in continental Europe
- can refer to a counterpart to reactionary; see Radical Republican
- can refer to member of a Radical Party
- can refer to a progressive liberal, e.g. the Radicals (UK), a group of left-wing MPs in the 19th-century British Parliament

This is a disambiguation page, a list of pages that otherwise might share the same title. If an article link referred you to this title, you might want to go back and fix it to point directly to the intended page.

de:Radikal

es:Radical fr:Radical io:Radiko nl:Radicaal pt:Radical sv:Radikal (samhällsvetenskap)