from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The slow descent of minute particles of debris in the atmosphere following an explosion, especially the descent of radioactive debris after a nuclear explosion.
- n. The particles that descend in this fashion.
- n. An incidental result or side effect: "Other social trends also have psychiatric fallout, and the people who suffer can't afford treatment” ( Martha Farnsworth Riche).
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. 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.
- n. The particles themselves.
- n. A negative side effect; an undesirable or unexpected consequence.
- n. A declined offer in a sales transaction when acceptance was presumed.
- n. The person who declines such an offer.
from the GNU version of the Collaborative International Dictionary of English
- n. the radioactive particles that settle to the ground after a nuclear explosion.
- n. the falling to the ground of radioactive particles lifted into the atmosphere by a nuclear explosion.
- n. an incidental or unexpected effect, especially one which is undesirable, consequent to an event or process; ; -- usually used only in the singular.
- n. one selected from a group by some criterion.
- n. one who fails to maintain the same pace as and lags behind a group of which s/he is a member.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. leave (a barracks) in order to take a place in a military formation, or leave a military formation
- v. come as a logical consequence; follow logically
- v. have a breach in relations
- v. come to pass
- v. come off
- n. the radioactive particles that settle to the ground after a nuclear explosion
- n. any adverse and unwanted secondary effect
From the verb fall out; fall + out (Wiktionary)