Definition of radical

Definition of radical
  1. radical Adjective Favouring fundamental change, or change at the root cause of a matter.
  2. radical Adjective Of or pertaining to a root.
  3. radical Adjective Of or pertaining to the intrinsic nature of something.
  4. radical Adjective Thoroughgoing.
  5. radical Adjective Of or pertaining to the root of a word.
  6. radical Adjective Involving free radicals
  7. radical Adjective Excellent.
  8. radical Noun A member of the most progressive wing of the Liberal Party; someone favouring social reform (but generally stopping short of socialism).
  9. radical Noun A member of an influential, centrist political party favouring moderate social reform, a republican constitution, and secular politics.
  10. radical Noun A person with radical opinions.
  11. radical Noun A root (of a number or quantity).
  12. radical Noun In logographic writing systems as the Chinese writing system, the portion of a character (if any) that provides an indication of its meaning, as opposed to "phonetic".
  13. radical Noun In Semitic languages, any one of the set of consonants (typically three) that make up a root.
  14. radical Noun A group of atoms, joined by covalent bonds, that take part in reactions as a single unit.
  15. radical Noun A free radical.
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