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 ?
Part of the funds are being used to clean up the radioactively contaminated soil around the former General Gas Mantle facility, which has been designated for special attention as a brownfield project, with hopes that the cleanup will spur redevelopment of the area, EPA reports.
Some of the materials present in the Mallinckrodt wastes include some of the most radioactively toxic of all radioactive materials identified to date.
12] absorption has been studied by various methods, including the urinary excretion of orally administered radioactively labeled vitamin [B.
Spoons and children's braces shouldn't be made of radioactively contaminated reactor parts.
As it radioactively decays, the isotope emits particles that can either directly or indirectly kill any cancer cells it encounters.
There are literally billions of gallons of radioactively contaminated water stored around the world waiting for a cost effective solution.
Andreeva Bay is one of the world's most radioactively dangerous places.
In the first Regulation, the Commission states that most of the agricultural products currently imported from non-EU countries are not radioactively contaminated following the Chernobyl accident or are contaminated to such a low extent that is represents a negligible risk from a health point of view.
RUSSIA IS THE MOST RADIOACTIVELY contaminated country in the world: Its nuclear industry is in collapse and its current economic crisis is so severe that it can barely manage waste from its own nuclear reactors.
Once released into the environment, it remains lethally radioactively for 300 years.
can be easily marked by inserting a radioactively labeled group.
When an atom broke down radioactively to another atom, comparative packing fractions reduced the total mass somewhat, and this made a certain amount of kinetic energy available for the emerging alpha particles.

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