Date: 1800-1900
Origin: nucleus


nu‧cle‧ar W3 [usually before noun]
1HPTP relating to or involving the nucleus (=central part) of an atom, or the energy produced when the nucleus of an atom is either split or joined with the nucleus of another atom:
France's reliance on nuclear energy
a nuclear power station
a nuclear-powered submarine
2PMWHP relating to or involving the use of weapons that use nuclear energy [↪ anti-nuclear]
nuclear bomb/weapon/missile etc
the threat of nuclear attack
concern about the country's nuclear weapons program
With the collapse of the former Soviet Union, the possibility of a nuclear holocaust (=a nuclear war that destroys much of the Earth) was greatly reduced.

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