- Favoring fundamental change, or change at the root cause of a matter.
- His beliefs are radical.
- (botany, not comparable) Pertaining to a root (of a plant).
- Pertaining to the basic or intrinsic nature of something.
- 1790 November, Edmund Burke, Reflections on the Revolution in France, and on the Proceedings in Certain Societies in London Relative to that Event. […], London: […] J[ames] Dodsley, […], OCLC 946162345:
- The most determined exertions of that authority, against them, only showed their radical independence.
- Thoroughgoing; far-reaching.
- 2012 January 1, Donald Worster, “A Drier and Hotter Future”, in American Scientist, volume 100, number 1, page 70:
- Phoenix and Lubbock are both caught in severe drought, and it is going to get much worse. We may see many such [dust] storms in the decades ahead, along with species extinctions, radical disturbance of ecosystems, and intensified social conflict over land and water. Welcome to the Anthropocene, the epoch when humans have become a major geological and climatic force.
- The spread of the cancer required radical surgery, and the entire organ was removed.
- (lexicography, not comparable) Of or pertaining to the root of a word.
- (phonology, phonetics, not comparable, of a sound) Produced using the root of the tongue.
- (chemistry, not comparable) Involving free radicals.
- (mathematics) Relating to a radix or mathematical root.
- a radical quantity; a radical sign
- (slang, 1980s & 1990s) Excellent; awesome.
- That was a radical jump!
- (linguistics, in reference to words): primitive
radical (plural radicals)
- (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).
- (historical, early 20th-century France) A member of an influential, centrist political party favouring moderate social reform, a republican constitution, and secular politics.
- A person with radical opinions.
- (arithmetic) A root (of a number or quantity).
- (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.
- In Semitic languages, any one of the set of consonants (typically three) that make up a root.
- (chemistry) A group of atoms, joined by covalent bonds, that take part in reactions as a single unit.
- (organic chemistry) A free radical.
- (algebra, commutative algebra, ring theory, of an ideal) Given an ideal I in a commutative ring R, another ideal, denoted Rad(I) or , such that an element x ∈ R is in Rad(I) if, for some positive integer n, xn ∈ I; equivalently, the intersection of all prime ideals containing I.
- (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".
- (algebra, ring theory, of a module) The intersection of maximal submodules of a given module.
- (number theory) The product of the distinct prime factors of a given positive integer.
- The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout § Translations.
- “radical” in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
- “radical” in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
- "radical" in Raymond Williams, Keywords (revised), 1983, Fontana Press, page 251.
- 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
radical (masculine and feminine plural radicals)
radical m or f (plural radicals)
- “radical” in Diccionari de la llengua catalana, segona edició, Institut d’Estudis Catalans.
- “radical”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2022
- “radical” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua.
- “radical” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962.
- L'idéologie islamiste radicale de Boko Haram a provoqué le déplacement de plus de deux millions de personnes dans le nord du Nigeria.
- The radical Islamist ideology of Boko Haram caused more than two million persons to be displaced in northern Nigeria.
radical m (plural radicaux)
- “radical”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.
radical m (plural radicais)
- radical (in various senses)
radical m (plural radicais)
radical m, f (plural radicais)
- radical (favouring fundamental change)
- drastic; extreme
- (Brazil, slang) excellent; awesome; thrilling
- (sports) extreme (dangerous)
- “radical” in Dicionário Priberam da Língua Portuguesa.
radical (plural radicales)
radical m (plural radicales)