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Definitions and Synonyms of radical | Another word for radical | What is radical?

Definition 1: a character conveying the lexical meaning of a logogram - [noun denoting communication]

(radical is a kind of ...) a written symbol that is used to represent speech

"the Greek alphabet has 24 characters"

(... is part of radical) a graphic character that indicates the meaning of a thing without indicating the sounds used to say it

"Chinese characters are ideograms"

Definition 2: (linguistics) the form of a word after all affixes are removed - [noun denoting communication]

Samples where radical or its synonyms are used according to this definition

  • thematic vowels are part of the stem

Synonyms for radical in the sense of this definition

(radical is a kind of ...) the phonological or orthographic sound or appearance of a word that can be used to describe or identify something

"the inflected forms of a word can be represented by a stem and a list of inflections to be attached"

(radical belongs to category ...) the scientific study of language

Definition 3: a person who has radical ideas or opinions - [noun denoting person]

(radical is a kind of ...) a human being

"there was too much for one person to do"

(... is a kind of radical ) a member of the Industrial Workers of the World

(... is a kind of radical ) radicals who support Trotsky's theory that socialism must be established throughout the world by continuing revolution

(... is a kind of radical ) a radical who employs terror as a political weapon; usually organizes with other terrorists in small cells; often uses religion as a cover for terrorist activities

(... is a kind of radical ) a radical supporter of political or social revolution

(... is a kind of radical ) a radical who advocates the abolition of social distinctions

(... is a kind of radical ) a person who holds extreme views

(... is a kind of radical ) emotionally charged terms used to refer to extreme radicals or revolutionaries

(... is a kind of radical ) an advocate of anarchism

(... is a kind of radical ) a young radical who agitates for reform

Definition 4: (mathematics) a quantity expressed as the root of another quantity - [noun denoting quantity]

(radical is a kind of ...) how much there is or how many there are of something that you can quantify

(radical belongs to category ...) a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement

Definition 5: (chemistry) two or more atoms bound together as a single unit and forming part of a molecule - [noun denoting substance]

Synonyms for radical in the sense of this definition

(radical is a kind of ...) a single undivided natural thing occurring in the composition of something else

"units of nucleic acids"

(... is a kind of radical ) a univalent chemical radical derived from ethylene

(... is a kind of radical ) the chemical group that gives color to a molecule

(... is a kind of radical ) the monovalent group -CN in a chemical compound

(... is a kind of radical ) a trivalent radical derived from glycerol by removing the three hydroxyl radicals

(... is a kind of radical ) the bivalent group -HNNH- derived from hydrazine

(... is a kind of radical ) the monovalent group -OH in such compounds as bases and some acids and alcohols

(... is a kind of radical ) a group having the characteristic properties of ketones

(... is a kind of radical ) the bivalent radical CH2 derived from methane

(... is a kind of radical ) the monovalent organic group C3H7- obtained from propane

(... is a kind of radical ) a hydrocarbon radical (C4H9)

(... is a kind of radical ) the group -NO3

(... is a kind of radical ) the radical -NO2 or any compound containing it (such as a salt or ester of nitrous acid)

(... is a kind of radical ) the bivalent radical UO2 which forms salts with acids

(... is a kind of radical ) the univalent radical -COOH; present in and characteristic of organic acids

(... is a kind of radical ) the bivalent radical CO

(... is a kind of radical ) the univalent group derived from arsine

(... is a kind of radical ) any group or radical of the form RCO- where R is an organic group

"an example of the acyl group is the acetyl group"

(... is a kind of radical ) the chemical group -OH

(... is a kind of radical ) the chemical group -CHO

(... is a kind of radical ) any of a series of univalent groups of the general formula CnH2n+1 derived from aliphatic hydrocarbons

(... is a kind of radical ) the univalent unsaturated organic radical C3H5; derived from propylene

(... is a kind of radical ) the radical -NH2

(... is a kind of radical ) a hydrocarbon radical that occurs in many organic compounds

(... is a kind of radical ) the univalent group N3- derived from hydrazoic acid

(... is a kind of radical ) the bivalent group -N=N- united to two hydrocarbon groups

(... is a kind of radical ) the univalent radical derived from toluene

(... is a kind of radical ) the univalent radical derived from benzoic acid

(... is part of radical) (physics and chemistry) the simplest structural unit of an element or compound

(radical belongs to category ...) the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions

Definition 6: an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule that has lost an electron and will stabilize itself by stealing an electron from a nearby molecule - [noun denoting substance]

Samples where radical or its synonyms are used according to this definition

  • in the body free radicals are high-energy particles that ricochet wildly and damage cells

Synonyms for radical in the sense of this definition

(radical is a kind of ...) (physics and chemistry) the smallest component of an element having the chemical properties of the element

Definition 7: especially of leaves; located at the base of a plant or stem; especially arising directly from the root or rootstock or a root-like stem - [adjective denoting all]

Samples where radical or its synonyms are used according to this definition

  • basal placentation
  • radical leaves

Synonyms for radical in the sense of this definition

(radical belongs to category ...) the branch of biology that studies plants

Definition 8: of or relating to or constituting a linguistic root - [adjective denoting pert]

Samples where radical or its synonyms are used according to this definition

  • a radical verb form

(radical belongs to category ...) the scientific study of language

Definition 9: arising from or going to the root or source - [adjective satellite denoting all]

Samples where radical or its synonyms are used according to this definition

  • a radical flaw in the plan

(radical is similar to ...) pertaining to or constituting a base or basis

"a basic fact" "the basic ingredients" "basic changes in public opinion occur because of changes in priorities"

Definition 10: (used of opinions and actions) far beyond the norm - [adjective satellite denoting all]

Samples where radical or its synonyms are used according to this definition

  • extremist political views
  • radical opinions on education
  • an ultra conservative

Synonyms for radical in the sense of this definition

(radical is similar to ...) beyond reasonable limits

"immoderate laughter" "immoderate spending"

Definition 11: markedly new or introducing radical change - [adjective satellite denoting all]

Samples where radical or its synonyms are used according to this definition

  • a revolutionary discovery
  • radical political views

Synonyms for radical in the sense of this definition

(radical is similar to ...) not of long duration; having just (or relatively recently) come into being or been made or acquired or discovered

"a new law" "new cars" "a new comet" "a new friend" "a new year" "the New World"

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