Definition of “nuclear” - English Dictionary

“nuclear” in British English

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nuclearadjective

uk /ˈnjuː.klɪər/ us /ˈnuː.kliː.ɚ/

nuclear adjective (POWER)

B2 being or using the power produced when the nucleus of an atom is divided or joined to another nucleus:

nuclear energy/power
a nuclear power plant
the nuclear industry

B2 relating to weapons, or the use of weapons, which use the power produced when the nucleus of an atom is divided or joined to another nucleus:

a nuclear war/attack
nuclear disarmament
How many nations have a nuclear capability (= have nuclear weapons)?

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(Definition of “nuclear” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“nuclear” in American English

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nuclearadjective

nuclear adjective (OF ATOMS)

physics us /ˈnu·kli·ər/ [ not gradable ] of or relating to a process by which the nucleus (= central part) of an atom is divided or joined to another nucleus, resulting in the release of energy

us /ˈnu·kli·ər/ [ not gradable ] relating to weapons, or the use of weapons, in which an atom is divided or joined to another nucleus to release energy in a destructive way:

nuclear war
nuclear disarmament (= giving up or removing a country’s nuclear weapons)

nuclear adjective (OF CELLS)

biology /ˈnu·kli·ər/ [ not gradable ] of or relating to the nucleus of a cell

(Definition of “nuclear” from the Cambridge Academic Content Dictionary © Cambridge University Press)

“nuclear” in Business English

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nuclearadjective

uk /ˈnjuːkliər/ us /ˈnuːkliər/

ENVIRONMENT, NATURAL RESOURCES, PRODUCTION relating to the power produced when the central part of an atom is divided or joined to another one:

nuclear energy/power/fuel The country had agreed to disable its main nuclear fuel production plant by the end of the year.
the nuclear industry
a nuclear plant/facility

relating to weapons that use nuclear energy:

a nuclear bomb/deterrent/war

(Definition of “nuclear” from the Cambridge Business English Dictionary © Cambridge University Press)