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 ?
As a legacy of the 1986 accident at the Chernobyl nuclear power plant, certain areas of Sweden suffered high levels of radioactive fallout in the month that followed the accident.
An accident there could cause devastation over a wide area with radioactive fallout threatening hundreds of thousands of lives.
Studies of the process may lead to better estimates of how long particles associated with acid rain or radioactive fallout stay in the atmosphere.
Army planners predicted Ireland could be deliberately or accidentally targeted or may suffer from radioactive fallout.
As low-level radioactive fallout from the catastrophic accident at the Chernobyl Nuclear Power Station began wafting over the West Coast of the United States on Monday, the Soviets began releasing their first, brief descriptions of what crippled a reactor in the Ukraine one week earlier.
It could all be assembled in a few hours and the result would create enough of a bang to demolish a small part of a large city (or a large part of a small city), with radioactive fallout over a much larger area.
And for any surviving stratigraphers, say two geologists, a nuclear apocalypse, with its concomitant radioactive fallout and mass extinctions, would create in the geological record an ideal horizon--a layer formed in sediments everywhere at once.
RADIOACTIVE fallout - clouds of radioactive particles of dust and bomb debris that fall back to the ground.
Eric's homeward journey took him through clouds of radioactive fallout, exposing him to radiation equivalent to 6,500 X-rays.
The accommodation is just big enough for the two soldiers who would have manned it for weeks on end - supposedly protected from radioactive fallout - in the event of nuclear attack.
Kiev suffered radioactive fallout after a fire blazed out of control at the Chernobyl plant just over a decade ago.
A SURGE in cancer cases on a remote Scottish island could have been caused by radioactive fallout from Chernobyl.