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Radical is part of the Academic Word List. It is important for students in college and university.
- A radical change, difference, etc. is very big and important; from the roots.
- The plan will not be easy and requires a radical change in the culture of the city.
- Many voices are calling for a more radical move away from the current situation.
- A radial idea, policy, etc. is one that is new and different; not standard.
- More radical organisations like Greenpeace and Friends of the Earth have brought attention to these issues.
- In a totalitarian society there is no more radical emotion than disbelief.
- (technical) Of or about a root (e.g., , the roots of plants, the root of a word, etc.)
- Dude, that outfit is rad!
- (countable) A radical is a person whose views are very different from most people.
- Leading radicals have called for a two-hour general strike on Monday.
- These were young radicals, overturning the post war consensus, rolling back the state, liberalising markets, and transforming the political economy.
- (countable) (mathematics) A quantity expressed as a root of another quantity. (e.g., )
- (countable) (chemistry) An atom or a group of atoms with at least one unpaired electron.
- (countable) (grammar) The basic part of a word to which other parts can be added (e.g., runner)
- (countable) A radical is one part of a Chinese or Japanese written character that can be combined with other parts to form a whole character.