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 ?
Consumer Watchdog, Physicians for Social Responsibility-LA, Committee to Bridge the Gap, and the Southern California Federation of Scientists represented by Strumwasser & Woocher brought suit in August 2013 against DTSC and the Department of Public Health (DPH) for allowing demolition and illegal disposal of radioactively contaminated structures from Area IV of the SSFL site without prior public review as CEQA requires.
West Lake's thorium-230 and actinium-227 have been ranked along with plutonium, americium and neptunium as among the most radioactively dangerous materials known.
In April 1998, the US Environmental Protection Agency announced plans to set radiation exposure standards that would, for the first time, allow the smelting of radioactively contaminated scrap metal (RSM) along with regular scrap for the production of consumer goods.
March 5, 2014 /PRNewswire-USNewswire/ -- Consumer Watchdog has confirmed that the Department of Public Health's Radiologic Health Branch is investigating allegations that large amounts of soil dug up in a potentially radioactively contaminated parcel at Hunters Point may not have been checked for radiation before shipping to facilities not licensed to take low level radioactive waste.
He and his team probed five zircons using a technique that measures how much of a particular uranium isotope has radioactively decayed into lead.
The new brain-mapping method combines very recent advances in a field known as "optogenetics" -- the use of optics (light activation) and genetics (genetically coded light-sensitive proteins) to control the activity of individual neurons, or nerve cells -- and Brookhaven's historical development of radioactively labeled chemical tracers to track biological activity with PET scanners.
The government has been checking distribution routes of crushed stones from quarries in Fukushima since the detection of the building materials suspected to have been radioactively contaminated.
The aim is to provide project management and technical support to the Russian Federation's efforts to decommission nuclear submarines and service vessels, the management of spent nuclear fuel and radioactive waste, and the environmental rehabilitation of radioactively contaminated sites in northwest Russia.
Not all of the facilities were radioactively contaminated.
Russia is generally ranked as the most radioactively contaminated country in the world, from the Barents Sea on its northwest border to the Pacific Ocean far to the east.
Readies for Risk of Radioactively Contaminated Patients and Enhanced Protection of Patient Treatment Resources
Starring Matthew Broderick and Jean Reno, the action film saw the enormous, radioactively mutated lizard running rampant once again, this time in Manhattan.

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