atomic age

noun
the period in history initiated by the first use of the atomic bomb and characterized by atomic energy as a military, political, and industrial factor.
Also called nuclear age.


Origin:
1940–45

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atomic age
 
n
the atomic age the current historical period, initiated by the development of the first atomic bomb towards the end of World War II and now marked by a balance of power between nations possessing the hydrogen bomb and the use of nuclear power as a source of energy

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Example sentences
Behold the future of atomic energy in a comic book from the dawn of the atomic
  age.
In my opinion, muddling through will not meet the challenges of the atomic age
  and space exploration.
It felt as if the end of the atomic age were upon us.
And for all its grand themes, the opera does not offer any new insights into
  the human condition in the atomic age.
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