[ UK /ɹˈædɪkə‍l/ ]
[ US /ˈɹædəkəɫ, ˈɹædɪkəɫ/ ]
  1. 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 and damage cells
  2. (linguistics) the form of a word after all affixes are removed
    thematic vowels are part of the stem
  3. a person who has radical ideas or opinions
  4. (mathematics) a quantity expressed as the root of another quantity
  5. a character conveying the lexical meaning of a logogram
  6. (chemistry) two or more atoms bound together as a single unit and forming part of a molecule
  1. 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
    radical leaves
    basal placentation
  2. markedly new or introducing radical change
    a revolutionary discovery
    radical political views
  3. (used of opinions and actions) far beyond the norm
    extremist political views
    radical opinions on education
    an ultra conservative
  4. of or relating to or constituting a linguistic root
    a radical verb form
  5. arising from or going to the root or source
    a radical flaw in the plan
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How To Use radical In A Sentence

  • As it stands, Earle is today probably best known more as a radical than as a rocker.
  • Long gone are the days when Chairman Mao was idolised by radicals (and even respected by some mainstream academics) on American university campuses.
  • All who disagreed openly were barred from the radical teach-in at the public school.
  • Radical is still reviewing whether to offer a second printing based on incoming reorders. FVZA: Federal Vampire and Zombie Agency #1 sells out | Major Spoilers - Comic Book Reviews and News
  • Benedict, put simply, is living out what he spoke of in Deus Caritas Est, which is true charity: Can we simply exclude them, as representatives of a radical fringe, from our pursuit of reconciliation and unity? Ecumenism
  • “Part of an adult faith, for example, is a commitment to the inviolability of human life from its first moment, radically opposing the principle of violence, precisely in the defense of the most defenseless of human creatures,” the pope said. Insight Scoop | The Ignatius Press Blog:
  • When guerrilla or partisan warfare further exasperated him, Grant proposed radical measures.
  • She seduces the despondent radical with whispers about the bleakness of mankind.
  • The bullhead is raised of the floor by light but sturdy, chromium plated steel legs, and use of the leather in the form of the head signifies a radical unity between to the two elements, as the bull is source of the leather. Han Plate | SciFi, Fantasy & Horror Collectibles
  • Her verbal spontaneity ruffled far too many feathers even if it attracted admiration from thousands of radicals and feminists.
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