radicals

radical

• n.
  • (chemistry) two or more atoms bound together as a single unit and forming part of a molecule

    同义词：groupchemical group

  • 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 particles that ricochet wildly and damage cells"

    同义词：free radical

  • a person who has radical ideas or opinions
  • a character conveying the lexical meaning of a logogram
  • a sign placed in front of an expression to denote that a root is to be extracted

    同义词：radical sign

  • (linguistics) the form of a word after all affixes are removed

    同义词：rootroot wordbasestemtheme

• adj.
  • (used of opinions and actions) far beyond the norm

    "radical opinions on education"

    同义词：extremistultra

  • markedly new or introducing radical change

    "radical political views"

    同义词：revolutionary

  • arising from or going to the root

    "a radical flaw in the plan"

  • of or relating to or constituting a linguistic root

    "a radical verb form"

  • 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"

    同义词：basal