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Definition of nuclear option noun from the Oxford Advanced Learner's Dictionary

nuclear option

noun

/ˈnjuːkliər ɒpʃn/

/ˈnuːkliər ɑːpʃn/

(politics)

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the most extreme possible response to a particular situation
- Currency controls would be the nuclear option.
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See nuclear option in the Oxford Advanced American Dictionary

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noun

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