Online Google Dictionary

radical 中文解釋 wordnet sense Collocation Usage Collins Definition
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(esp. of change or action) Relating to or affecting the fundamental nature of something; far-reaching or thorough,
  1. (esp. of change or action) Relating to or affecting the fundamental nature of something; far-reaching or thorough
    • - a radical overhaul of the existing regulatory framework
  2. Forming an inherent or fundamental part of the nature of someone or something
    • - the assumption of radical differences between the mental attributes of literate and nonliterate peoples
  3. (of surgery or medical treatment) Thorough and intended to be completely curative

  4. Characterized by departure from tradition; innovative or progressive
    • - a radical approach to electoral reform
  5. Advocating thorough or complete political or social reform; representing or supporting an extreme section of a political party
    • - a radical American activist
  6. (of a measure or policy) Following or based on such principles

  7. Of or relating to the root of something, in particular

  8. Of the root of a number or quantity

  9. Denoting or relating to the roots of a word

  10. Denoting the semantic or functional class of a Chinese character

  11. Belonging to the root of a chord

  12. Of, or springing direct from, the root or stem base of a plant

  13. Very good; excellent
    • - Okay, then. Seven o'clock. Radical!
  1. A person who advocates thorough or complete political or social reform; a member of a political party or part of a party pursuing such aims

  2. A group of atoms behaving as a unit in a number of compounds

  3. The root or base form of a word

  4. Any of the basic set of 214 Chinese characters constituting semantically or functionally significant elements in the composition of other characters and used as a means of classifying characters in dictionaries

  5. A quantity forming or expressed as the root of another

  6. A radical sign

  1. extremist: (used of opinions and actions) far beyond the norm; "extremist political views"; "radical opinions on education"; "an ultra conservative"
  2. group: (chemistry) two or more atoms bound together as a single unit and forming part of a molecule
  3. free radical: 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; "in the body free radicals are high-energy particles that ricochet wildly ...
  4. revolutionary: markedly new or introducing radical change; "a revolutionary discovery"; "radical political views"
  5. a person who has radical ideas or opinions
  6. arising from or going to the root or source; "a radical flaw in the plan"
  7. Radicals (often referred to as free radicals) are atoms, molecules, or ions with unpaired electrons on an open shell configuration. Free radicals may have positive, negative or zero charge. ...
  8. Radicals in Chinese characters refer to the section headers of a Chinese dictionary . Radicals are used to organise Chinese characters in Chinese dictionaries. All Chinese characters can be classified into radicals. ...
  9. Radical is the Finnish rock band Smack's fourth and last studio album. It was released in 1988.
  10. Katherine (also known as The Radical) is a 1975 television movie starring Sissy Spacek, Art Carney and Henry Winkler. It was written and directed by Jeremy Kagan. ...
  11. (Radicals (UK)) The Radicals were a parliamentary political grouping in the United Kingdom in the early to mid 19th century, who drew on earlier ideas of radicalism and helped to transform the Whigs into the Liberal Party.
  12. A member of the most progressive wing of the Liberal Party; someone favouring social reform (but generally stopping short of socialism); A member of an influential, centrist political party favouring moderate social reform, a republican constitution, and secular politics; A person with radical ...
  13. (radicalness) the state or the quality of being radical
  14. (Free Radicals) A molecule which has at least one unpaired electron.  In polymers, such a species will be formed, most probably, as a result of chemical bond breakage by heat or light energy. ...
  15. (Radicals) "Radical" is from the Latin word "radix," which means root. Radicals are activists who look for the roots of the social, economic, and political wrongs in society and demand immediate and sweeping changes to remedy them.
  16. (Radicals) A group of strokes in a Chinese character that are treated as a unit for the purposes of sorting, indexing, and classification. ...
  17. (Radicals) In the fictional universe of Warhammer 40,000, Lord Commander Solar Macharius was a famous commander of the Imperial Guard. ...
  18. Oxygen free-radicals are continuously produced in body tissues. Their production increases in response to sun, X-rays, smoking, pollution etc... They damage cell walls, genetic material and more. ...
  19. Something very different from the usual or traditional or a person who favours major political or social change
  20. acts lead to revolutionary when they supersede their implicit reformism.
  21. A radical is a square root sign and looks like this: . Most calculators have a on one of the keys.
  22. A group of atoms acting as a single atom which go through chemical reactions without being changed.
  23. A structural component of a Han character conventionally used for indexing. The traditional number of such radicals is 214.
  24. Surgical attempt to cure disease by taking out the entire specimen and surrounding structures.
  25. of leaves, clustered at the base of the stem. Fig.2 I. cf. cauline, rosette.