radioactive

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Related to Radioactive Fallout: Nuclear fallout

radioactive

 [ra″de-o-ak´tiv]
characterized by radioactivity.
radioactive iodine uptake test radioiodine uptake test.

ra·di·o·ac·tive

(rā'dē-ō-ak'tiv),
Possessing radioactivity.
Synonym(s): radio- (2)

radioactive

[rā′dē·ōak′tiv]
Etymology: L, radius, ray, activus, active
giving off radiation as the result of the disintegration of atomic nuclei.

radioactive

adjective Referring to radioactivity or emission of radiation—e.g., alpha or beta particles, or gamma emission—from an atomic nucleus.

radioactive

adjective Referring to radioactivity or emission of radiation–eg, alpha or beta particles, or gamma rays from an atomic nucleus

ra·di·o·ac·tive

(rā'dē-ō-ak'tiv)
Possessing radioactivity.

radioactive

characterized by radioactivity.

radioactive decay
spontaneous decomposition of the nuclei of the atoms of radioactive substances. Measured as the proportion of the atoms in a radionuclide that decompose per unit of time, usually stated as the half-life of that particular isotope.
radioactive fallout
dissemination of radioactive substances through the atmosphere and deposition on the environment generally; causes radiation injury.
radioactive isotope
radionuclide. A radioactive nuclide, e.g. radioactive iodine or strontium.
radioactive tracer
see radioactive tracer.
References in periodicals archive ?
Although we're not really prime target for such an attack compared to nearby Guam and Japan, or Hawaii farther away, the threat of radioactive fallout reaching our country is still high.
Even though North Korea is a long way off, following a nuclear exchange confined to Korea and Japan, radioactive fallout will still be a serious issue for Western Europe and the United States.
If the water was drained away due to an attack or accident, the rods would burn and spew radioactive fallout.
The accidents in Japan and Russia proved to be very unsafe as radioactive fallout lasts ages.
At one landfill, a 300-degree Fahrenheit underground fire smolders barely 1,000 feet away from where some 8,700 tons of this waste lies buried, posing the imminent threat of radioactive fallout.
It is fitted with an air filtration system that resists radioactive fallout as well as technology that protects against an EMP attack or a nuclear explosion.
But frightening new scientific findings have forced us to look at a larger reality: the bottom-up damage that radioactive fallout may do to the entire global ecosystem.
Thousands of Fukushima people currently live in emergency housing because of radioactive fallout from a wrecked power plant.
John, who died of a rare form of leukaemia, was one of 22,000 men ordered to witness atomic bomb tests between 1952 and 1967, dressed only in shirts and shorts while radioactive fallout showered down on them.
And the explosion at the Chernobyl power plant in 1986 that sent radioactive fallout into the atmosphere spreading across Europe had claimed more than 25 000 lives of the cleanup workers.