Definition from Wiktionary, the free dictionary
fallout (plural fallouts)
- The event of small airborne particles falling to the ground in significant quantities as a result of major industrial activity, volcano eruption, sandstorm, nuclear explosion, etc.
- The particles themselves.
- On 26 April 1986 the reactor number four at the Chernobyl Nuclear Power Plant located in the Soviet Union near Pripyat in Ukraine exploded. Further explosions and the resulting fire sent a plume of highly radioactive fallout into the atmosphere and over an extensive geographical area.
- A negative side effect; an undesirable or unexpected consequence.
- Psychological fallout in the shadow of terrorism, title of an article by Dr. Abraham Twerski, M.D. in .
- (rare) A declined offer in a sales transaction when acceptance was presumed.
- (rare) The person who declines such an offer.
Derived terms 
Terms derived from fallout
- (negative side effect): repercussions
event of airborne particles falling to the ground
particles that fall to the ground
person who declines such an offer
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