radioactive


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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 ?
The center will temporarily store the waste and prepare, or condition, it for further shipment for internment by Russia's newly-minted national operator for radioactive waste handling, known in its Russian acronym as NORAO.
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The researchers aren't sure how the radioactive element makes its way from fallout-tainted soil into the atmosphere.
In addition to concerns about radioactive waste, many Western observers are alarmed over the persistent threat of nuclear bomb-making materials being smuggled outof the country.
17] Salivary gland flow is decreased in a dose-related manner in patients who have received radioactive iodine.
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But in 1979, Pennsylvania's Three Mile Island (TMI) power plant proved that nuclear accidents can strike home: radioactive gases escaped when a reactor malfunctioned.
Given these potential risks, the obvious question is: What can foundries do to prevent radioactive sources and scrap from entering their facilities?
Vietnam currently has only two agencies to store radioactive wastes, one of them is the Radioactive Management Unit of the Da Lat Nuclear Research Institute, according to Nguyen Nu Hoai Vi, Director of the Nuclear Control Division of the Vietnam Agency for Radiation and Nuclear Safety.