radical
noun/ˈrædɪkl/
/ˈrædɪkl/
- a person with radical opinions
- political radicals
- (chemistry) a group of atoms that behave as a single unit in a number of compounds see also free radical
Word Originlate Middle English (in the senses ‘forming the root’ and ‘inherent’): from late Latin radicalis, from Latin radix, radic- ‘root’.
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radical