radical Meaning and Definition
1. a. 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
2. a. of or relating to or constituting a linguistic root
3. n. (linguistics) the form of a word after all affixes are removed
4. n. a sign placed in front of an expression to denote that a root is to be extracted
5. n. a character conveying the lexical meaning of a logogram
6. n. a person who has radical ideas or opinions
7. n. (chemistry) two or more atoms bound together as a single unit and forming part of a molecule
8. n. 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
9. s. (used of opinions and actions) far beyond the norm
10. s. markedly new or introducing radical change
11. s. arising from or going to the root
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