Similar Words to Radical:

Basal
Base
Chemical Group
Extremist
Free Radical
Group
Revolutionary
Root
Root Word
Stem
Theme
Ultra

Definitions of Radical:

1. (chemistry) two or more atoms bound together as a single unit and forming part of a molecule
2. 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
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. (linguistics) the form of a word after all affixes are removed
7. Of or relating to or constituting a linguistic root
8. 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
9. (used of opinions and actions) far beyond the norm
10. Markedly new or introducing radical change
11. Arising from or going to the root or source