radical

radical

synonyms, antonyms, definitions, examples & translations of radical in English

English Online Dictionary. What means radical‎? What does radical mean?

English

Etymology

From French radical, from Late Latin radicalis (of or pertaining to the root, having roots, radical), from Latin radix (root); see radix.

Pronunciation

  • enPR: rădʹĭk-əl, IPA(key): /ˈɹædɪkəl/
  • Homophone: radicle

Adjective

radical (comparative more radical, superlative most radical)

  1. Favoring fundamental change, or change at the root cause of a matter.
  2. (botany, not comparable) Pertaining to a root (of a plant).
  3. Pertaining to the basic or intrinsic nature of something.
    • Burke
      The most determined exertions of that authority, against them, only showed their radical independence.
  4. Thoroughgoing; far-reaching.
    The spread of the cancer required radical surgery, and the entire organ was removed.
  5. (lexicography, not comparable) Of or pertaining to the root of a word.
  6. (phonology, phonetics, not comparable, of a sound) Produced using the root of the tongue.
  7. (chemistry, not comparable) Involving free radicals.
  8. (mathematics) Relating to a radix or mathematical root.
    a radical quantity; a radical sign
  9. (slang, 1980s & 1990s) Excellent; awesome.
    That was a radical jump!

Synonyms

  • (pertaining to the basic or intrinsic nature of something): fundamental
  • (linguistics, in reference to words): primitive

Antonyms

  • (pertaining to the basic or intrinsic nature of something): ignorable, trivial
  • (linguistics, in reference to words): derivative, derived

Coordinate terms

  • (produced with the root of the tongue): labial, coronal, dorsal, laryngeal

Derived terms

  • radicalness
  • radicality
  • radicalize
  • radically
  • radical empiricism
  • radical feminism
  • radical left
  • radical pluralism
  • radical reform
  • radical right
  • radical Islam
  • radical vinegar

Related terms

  • root
  • radix

Translations

Noun

radical (plural radicals)

  1. (historical: 19th-century Britain) A member of the most progressive wing of the Liberal Party; someone favouring social reform (but generally stopping short of socialism).
  2. (historical: early 20th-century France) A member of an influential, centrist political party favouring moderate social reform, a republican constitution, and secular politics.
  3. A person with radical opinions.
  4. (arithmetic) A root (of a number or quantity).
  5. (linguistics) In logographic writing systems such as the Chinese writing system, the portion of a character (if any) that provides an indication of its meaning, as opposed to phonetic.
  6. (linguistics) In Semitic languages, any one of the set of consonants (typically three) that make up a root.
  7. (chemistry) A group of atoms, joined by covalent bonds, that take part in reactions as a single unit.
  8. (organic chemistry) A free radical.
  9. (algebra, commutative algebra, ring theory, of an ideal) Given an ideal I in a commutative ring R, another ideal, denoted Rad(I) or I {displaystyle {sqrt }} , such that an element xR is in Rad(I) if, for some positive integer n, xnI; equivalently, the intersection of all prime ideals containing I.
  10. (algebra, ring theory, of a ring) Given a ring R, an ideal containing elements of R that share a property considered, in some sense, "not good".
  11. (algebra, ring theory, of a module) The intersection of maximal submodules of a given module.
  12. (number theory) The product of the distinct prime factors of a given positive integer.

Derived terms

Related terms

  • nilradical

Translations

References

  • radical in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913
  • radical in The Century Dictionary, The Century Co., New York, 1911
  • "radical" in Raymond Williams, Keywords (revised), 1983, Fontana Press, page 251.

Further reading

  • Radical on Wikipedia.Wikipedia
  • Radical of an ideal on Wikipedia.Wikipedia
  • Radical of a ring on Wikipedia.Wikipedia
  • Radical of a module on Wikipedia.Wikipedia
  • Radical of an integer on Wikipedia.Wikipedia
  • Radical of an ideal on Encyclopedia of Mathematics
  • Ideal Radical on Wolfram MathWorld

Anagrams

  • aldaric, cardial

Catalan

Pronunciation

  • (Balearic, Central) IPA(key): /rə.diˈkal/
  • (Valencian) IPA(key): /ra.diˈkal/

Adjective

radical (masculine and feminine plural radicals)

  1. radical

Noun

radical m, f (plural radicals)

  1. radical

French

Etymology

Borrowed from Late Latin rādīcālis.

Pronunciation

  • IPA(key): /ʁa.di.kal/
  • Rhymes: -al
  • Homophones: radicale, radicales

Adjective

radical (feminine singular radicale, masculine plural radicaux, feminine plural radicales)

  1. radical

Noun

radical m (plural radicaux)

  1. (linguistics, grammar) radical, root

Further reading

  • “radical” in le Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

Galician

Pronunciation

Noun

radical m (plural radicais)

  1. radical (in various senses)

Further reading

  • “radical” in Dicionario da Real Academia Galega, Royal Galician Academy.

Portuguese

Pronunciation

  • (Brazil) IPA(key): /ʁad͡ʒiˈkaw/
  • (Portugal) IPA(key): /ʁɐðiˈkaɫ/
  • Hyphenation: ra‧di‧cal

Noun

radical m (plural radicais)

  1. (linguistic morphology) root (primary lexical unit of a word)

Synonyms

  • raiz

Noun

radical m, f (plural radicais)

  1. radical (person holding unorthodox views)

Synonyms

  • extremista

Adjective

radical m, f (plural radicais, comparable)

  1. radical (favouring fundamental change)
  2. drastic; extreme
  3. (Brazil, slang) excellent; awesome; thrilling
  4. (sports) extreme (dangerous)

Romanian

Adjective

radical m, n (feminine singular radicală, masculine plural radicali, feminine and neuter plural radicale)

  1. radical

Declension

Related terms

  • radicalist
  • radicaliza

Spanish

Pronunciation

  • IPA(key): /radiˈkal/, [raðiˈkal]
  • Hyphenation: ra‧di‧cal

Adjective

radical (plural radicales)

  1. radical

Noun

radical m (plural radicales)

  1. radical

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This article based on an article on Wiktionary. The list of authors can be seen in the page history there. The original work has been modified. This article is distributed under the terms of this license.