noun
: the chilling of climate that is hypothesized to be a consequence of nuclear war and to result from the prolonged blockage of sunlight by high-altitude dust clouds produced by nuclear explosions
noun
: the chilling of climate that is hypothesized to be a consequence of nuclear war and to result from the prolonged blockage of sunlight by high-altitude dust clouds produced by nuclear explosions
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012