Dictionary

  Definition of radical
  1. (linguistics) the form of a word after all affixes are removed; "thematic vowels are part of the stem"
  2. a sign placed in front of an expression to denote that a root is to be extracted
  3. a character conveying the lexical meaning of a logogram
  4. a person who has radical ideas or opinions
  5. (chemistry) two or more atoms bound together as a single unit and forming part of a molecule
  6. an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule than has lost an electron and will stabilize itself by stealing an electron from a nearby molecule; "in the body free radicals are high-energy part
  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; "basal placentation"; "radical leaves"
  8. (used of opinions and actions) far beyond the norm; "extremist political views"; "radical opinions on education"; "an ultra conservative"
  9. markedly new or introducing radical change; "a revolutionary discovery"; "radical political views"
  10. arising from or going to the root; "a radical flaw in the plan"
  11. of or relating to or constituting a linguistic root; "a radical verb form"
Similar Words: root, root word, base, stem, theme, radical sign, group, chemical group, free radical, basal, extremist, ultra, revolutionary

 

Hyponyms: anarchist, nihilist, syndicalist, Bolshevik, Marxist, pinko, red, bolshie, extremist, leveler, leveller, revolutionist, revolutionary, subversive, subverter, terrorist, Trotskyite, Trotskyist, Trot, Wobbly, Young Turk, acyl, acyl group, alcohol group, alcohol radical, aldehyde group, aldehyde radical, alkyl, alkyl group, alkyl radical, allyl, allyl group, allyl radical, amino, amino group, azido group, azido radical, azo group, azo radical, benzyl, benzyl group, benzyl radical, benzoyl group, benzoyl radical, cacodyl, cacodyl group, cacodyl radical, arsenic group, carbonyl group, carboxyl, carboxyl group, chromophore, cyano group, cyano radical, cyanide group, cyanide radical, glyceryl, hydrazo group, hydrazo radical, hydroxyl, hydroxyl group, hydroxyl radical, ketone group, methylene group, methylene radical, methylene, propyl, propyl group, propyl radical, butyl, nitro group, nitrite, uranyl, uranyl group, uranyl radical, vinyl, vinyl group, vinyl radical

 

Pertainyms: root, root word, base, stem, theme

 

Part Meronyms: ideogram, ideograph, molecule

 

Derivational Morphology: stem

 

 
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