| Front | adjective 1 (especially of change or action) relating to or affecting the fundamental nature of something far-reaching or thorough: 2 characterized by departure from tradition innovative or progressive: 3 relating to the root of something, in particular: 4 N. Amer. very good excellent: noun 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 Chemistry a group of atoms behaving as a unit in a number of compounds. See also free radical. 3 the root or base form of a word. 4 Mathematics a quantity forming or expressed as the root of another. |
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| Back | radical |
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