radical

Fetched 2026-10-26 (cache).

Synonyms: radial, radicel, radcal, radican, radikal

Antonyms: radial, radicel, radcal, radican, radikal

Related words from Datamuse; suggestions, not definitions.

Adjective

1. {{lb|en|botany|not comparable}} Of or pertaining to the [[root]] of a [[plant]].
2. {{lb|en|lexicography|not comparable}} Of or pertaining to the root of a word.
3. {{lb|en|phonology|phonetics|not comparable|of a sound}} Produced using the root of the tongue.
4. {{lb|en|math}} Relating to a [[radix]] or mathematical root.
5. Pertaining to the [[basic]] or [[intrinsic]] nature of something.
6. Favoring [[fundamental]] change, or change at the root cause of a matter.
7. [[thoroughgoing|Thoroughgoing]]; [[far-reaching]].
8. {{lb|en|chemistry|not comparable}} Involving [[free radical]]s.
9. {{lb|en|slang}} [[excellent|Excellent]]; [[awesome]].

Noun

1. {{lb|en|arithmetic}} A [[root]] (of a number or quantity).
2. {{senseid|en|character portion}}{{lb|en|linguistics}} In [[logographic]] writing systems such as the Chinese writing system, the portion of a character used to index it. Often, but not always, this is also the portion indicating meaning; compare the following sense.
3. {{senseid|en|Celtic mutation root}}{{lb|en|linguistics}} In [[Celtic]] languages, the basic, underlying form of an initial consonant which can be further [[mutate]]d under the Celtic initial consonant mutations.
4. {{lb|en|linguistics}}{{C|en|Semitic linguistics}} In [[Semitic]] languages, any one of the set of consonants (typically three) that make up a [[root]].
5. {{lb|en|chemistry}} A group of [[atom]]s, joined by [[covalent bond]]s, that take part in [[reaction]]s as a single [[unit]].
6. {{lb|en|organic chemistry}} A [[free radical]].
7. {{lb|en|algebra|commutative algebra|ring theory|of an [[ideal]]}} Given an [[ideal]] ''I'' in a [[commutative]] [[ring]] ''R'', another ideal, denoted Rad(''I'') or <math>\sqrt{I}</math>, such that an element ''x'' ∈ ''R'' is in Rad(''I'') if, for some [[positive]] [[integer]] ''n'', ''xⁿ'' ∈ ''I''; ''equivalently'', the [[intersection]] of all [[prime ideal]]s containing ''I''.
8. {{lb|en|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".
9. {{lb|en|algebra|ring theory|of a [[module]]}} The [[intersection]] of maximal [[submodule]]s of a given [[module]].
10. {{lb|en|number theory}} The product of the distinct [[prime factor]]s of a given positive integer.
11. {{lb|en|historical|19th-century Britain|politics}} A member of the most progressive wing of the Liberal Party; someone favouring social reform (but generally stopping short of socialism).
12. {{lb|en|historical|early 20th-century France}} A member of an influential, centrist political party favouring moderate social reform, a republican constitution, and secular politics.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.