[ˈradɪkl], (Adjective)

Definitions:
- (especially of change or action) relating to or affecting the fundamental nature of something; far-reaching or thorough
(e.g: a radical overhaul of the existing regulatory framework)

- advocating or based on thorough or complete political or social change; representing or supporting an extreme or progressive section of a political party
(e.g: a radical activist)

- denoting or relating to the roots of a word

- relating to or forming the root of a number or quantity

- of, or springing direct from, the root or stem base of a plant

- very good; excellent
(e.g: Okay, then. Seven o'clock. Radical!)


Phrases:

Origin:
late Middle English (in the senses ‘forming the root’ and ‘inherent’): from late Latin radicalis, from Latin radix, radic- ‘root’

[ˈradɪkl], (Noun)

Definitions:
- a person who advocates thorough or complete political or social change, or a member of a political party or section of a party pursuing such aims

- a group of atoms behaving as a unit in a number of compounds

- the root or base form of a word

- a quantity forming or expressed as the root of another


Phrases:

Origin:
late Middle English (in the senses ‘forming the root’ and ‘inherent’): from late Latin radicalis, from Latin radix, radic- ‘root’