atomic age

noun
  1. 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.

Origin of atomic age

First recorded in 1940–45
Also called nuclear age.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for atomic age

atomic age

noun
  1. 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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012