Radical
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Template:Wiktionary Radical is derived from the Latin word radix, which means "root". It may refer to:
In mathematics:
- Radical (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
- Radical of an algebraic group, a concept in algebraic group theory
- Radical of an ideal, an important concept in abstract algebra
In linguistics:
- Radical consonant, involves the root of the tongue
- Radical (Chinese character), in grammatology, part of a Chinese character
In sciences:
- Radical (chemistry), atomic or molecular species with unpaired electrons
In politics:
- a supporter of a revolutionary social movement
- Radicalism (historical), leftist liberal movements in continental Europe and Latin America
- Radical Republican, an influential group of American politicians during the Civil War reconstruction
- Radical Party member
- Radicals (UK), a progressive liberal
de:Radikal es:Radical fr:Radical io:Radiko nl:Radicaal pt:Radical ru:Радикал sv:Radikal (samhällsvetenskap)