fallout

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fallout,

minute particles of radioactive material produced by nuclear explosions (see atomic bombatomic bomb
or A-bomb,
weapon deriving its explosive force from the release of nuclear energy through the fission (splitting) of heavy atomic nuclei. The first atomic bomb was produced at the Los Alamos, N.Mex., laboratory and successfully tested on July 16, 1945.
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; hydrogen bombhydrogen bomb
or H-bomb,
weapon deriving a large portion of its energy from the nuclear fusion of hydrogen isotopes. In an atomic bomb, uranium or plutonium is split into lighter elements that together weigh less than the original atoms, the remainder of the mass
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; ChernobylChernobyl
, Ukr. Chornobyl, abandoned city, N Ukraine, near the Belarus border, on the Pripyat River. Ten miles (16 km) to the north, in the town of Pripyat, is the Chernobyl nuclear power station, site of the worst nuclear reactor disaster in history. On Apr.
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) or by discharge from nuclear-power or atomic installations and scattered throughout the earth's atmosphere by winds and convection currents. Heavier fallout particles tend to settle to earth around the explosion site and downwind from it soon after the explosion. Lighter particles may stay in the atmosphere for years. Radioactive decay products in fallout include strontium-90, potassium-40, carbon-14, and iodine-131. They may contaminate food supplies if taken up by plants and animals or contaminate water supplies by falling into streams. If they accumulate in the human body, they can form concentrated internal sources of dangerous radiation. Fallout may thus be a cause of leukemialeukemia
, cancerous disorder of the blood-forming tissues (bone marrow, lymphatics, liver, spleen) characterized by excessive production of immature or mature leukocytes (white blood cells; see blood) and consequently a crowding-out of red blood cells and platelets.
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, bone cancercancer,
in medicine, common term for neoplasms, or tumors, that are malignant. Like benign tumors, malignant tumors do not respond to body mechanisms that limit cell growth.
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, and other diseases. It can also cause genetic damage.

fallout

[′fȯl‚au̇t]
(electronics)
Failure of electronic components during burn-in.
(nucleonics)
The material that descends to the earth or water well beyond the site of a surface or subsurface nuclear explosion. Also known as atomic fallout; radioactive fallout.

fallout

1. the descent of solid material in the atmosphere onto the earth, esp of radioactive material following a nuclear explosion
2. any solid particles that so descend
References in periodicals archive ?
Don't let these fall-outs affect your enjoyment of school or your studies.
A TEESSIDE dad killed himself after a number of fall-outs in his personal life, a court heard.
They are examining his associates and local fall-outs but keeping an open mind.
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The directors of The National Showcaves Centre For Wales at Dan-yr-Ogof in the Upper Swansea Valley have taken the action following a series of public fall-outs with the planners at the Brecon Beacons National Park.
Watch the twists and turns of the lovable schoolmates as they try to survive friend fall-outs and canteen cliques to follow their dreams and score the leads in the big school show and a place in each others' hearts.
And they fear homes will suffer a constant stench, and say the fall-outs could affect three nearby schools.
Ideally, they would have signed up Ruddock and Johnson in the autumn to prevent any rumours about resignations and internal fall-outs on the eve of the Dragons' defence of the Six Nations.
Filmed virtually round the clock, the documentary follows the group's bonding, fall-outs and romantic liaisons as they get to know each other during seven intensive days.
Available for PC and PlayStation, the game is guaranteed to add to the festive fall-outs.
Expect the usual champagne-fuelled fall-outs, romantic hook-ups and trademark awkwardness as Binky, Jamie, Toff and the gang enjoy pool parties, canyon hikes and retail binges on Rodeo Drive with daddy's platinum credit card.
I couldn't have asked for a better crew, we've had no fall-outs, lots of smiles, lots of hard work.