nuclear winternuclear winter
a hypothetical condition following nuclear war in which light from the sun is cut off by clouds of smoke and dust, resulting in very low temperatures and consequent devastation of the environment
Origin of nuclear winterterm popularized by Carl Sagan, who attributed its coinage to R. P. Turco (b. 1943), United States environmental scientist
A worldwide darkening and cooling of the atmosphere with consequent devastation of life forms, believed to be a probable outcome of large-scale nuclear war.
(plural nuclear winters)
- A predicted drop in global temperature following a nuclear war due to dust in the upper atmosphere reducing sunlight reaching the ground.