radioactive

Definition of radioactive in English English dictionary: Any material which emits beta, gamma, or alpha rays from the nucleus of the atom; exhibiting or caused by radioactivity; "radioactive isotope"; "radioactive decay"; "radioactive fallout"; when an isotope decomposes spontaneously; The spontaneous disintegration of the nucleus of certain elements, like Uranium In the process, alpha, beta and sometimes gamma rays are emitted; Capable of luminescence under the action of cathode rays, X rays, or any of the allied forms of radiation; The state of emitting radiation energy in forms of waves (rays) or particles; Elements such as radium; Giving off, or capable of giving off, radiant energy in the form of particles (alpha or beta radiation) or rays (gamma radiation) by the spontaneous disintegration of the nuclei of atoms Radioisotopes of elements lose particles and energy through the process of radioactive decay Elements may decay into different atoms or a different state of the same atom; Exhibiting radioactivity; (RAY-dee-o-AK-tiv): Giving off radiation; Giving off radiation; Capable of emitting high-energy rays or particles; Radioactive describes the spontaneous disintegration of atomic nuclei accompanied by the emission of small particles Depending on the type of emission, scientists define alpha (helium nuclei), beta (electrons or positrons), and gamma radiation (short-wavelength electromagnetic waves); a property of certain elements, or isotopes of an element, whose atomic nuclei are unstable and subject to spontaneous disintegration, thereby giving off ionizing radiation; Giving off or capable of giving off radiant energy in the form of particles or rays, as in alpha, beta, and gamma rays; Having unstable atoms that decay or break down to another kind of atom The process emits high-energy particles For example, radium decays to form radon Radiation includes high-energy particles, which include alpha and beta particles and gamma rays; A word used to describe substances that contain atoms that emit nuclear radiation How radioactive a substance is depends on its activity; (adj); These nuclei are unstable They decay by emitting alpha or beta particles or gamma rays; exhibiting or caused by radioactivity; "radioactive isotope"; "radioactive decay"; "radioactive fallout; Describing the spontaneous breakdown of atomic nuclei (normally the heaviest atoms) into lighter nuclei with the ejection of alpha particles, electrons, and gamma photons; {s} emitting energy as a result of atomic decay, radiating energy in waves or moving particles; DECAY; an unstable nuclei which will decay to a different nuclei and emit radioactivity (an alpha, beta, or gamma) in the process; Emitting radiation, as in the case of many forms of uranium Radioactivity is caused by changes occurring in the nucleus of the atom; Substance containing an element which decays; of or characterized by radioactivity; a radionuclide that undergoes spontaneous nuclear decay; Property of undergoing spontaneous nuclear transformation in which nuclear particles or electromagnetic energy are emitted; An unstable isotope that decays spontaneously and releases subatomic particles or units of energy; Something that is radioactive contains a substance that produces energy in the form of powerful and harmful rays. The government has been storing radioactive waste at Fernald for 50 years. + radioactivity radio·ac·tiv·ity waste which is contaminated with low levels of radioactivity. a radioactive substance is dangerous because it contains radiation (=a form of energy that can harm living things); hot
radioactive dating: An instance of so doing
radioactive dating: A method of determining the age of objects or material using the decay rates of radioactive components such as potassium-argon
radioactive decay: Any of several processes by which unstable nuclei emit subatomic particles and/or ionizing radiation and disintegrate into one or more smaller nuclei
radioactive fallout: material settling from a radioactive plume, and its subsequent surface deposition
radioactive fallouts: plural form of radioactive fallout
radioactive tracer: a radioactive isotope which, when injected into a chemically similar substance, or artificially attached to a biological or physical system, can be traced by radiation detection devices
radioactive waste: A waste type containing radioactive chemical elements that does not have a practical purpose
radioactive cobalt: radioactive form of the chemical element cobalt (Co), cobalt 60
radioactive dating: a scientific method of calculating the age of a very old object by measuring the amount of a certain substance in it British Equivalent: carbon dating
radioactive dating: measurement of the amount of radioactive material (usually carbon 14) that an object contains; can be used to estimate the age of the object
radioactive decay: gradual reduction in the number of radioactive atoms in material
radioactive fallout: particles charged with radioactive material that were created due to an atomic explosion
radioactive iodine excretion test: radioactive iodine test that measures the amount of radioactive iodine excreted in the urine
radioactive iodine test: test of thyroid function in which the patient is give an oral does of radioactive iodine-131
radioactive iodine uptake test: radioactive iodine test that measures the amount of radioactive iodine taken up by the thyroid gland
radioactive leakage: seepage of radioactive materials, leak of radioactivity
radioactive material: material that is radioactive
radioactive series: A group of isotopes representing various stages of radioactive decay in which the heavier members of the group are transformed into successively lighter ones, the lightest being stable. Any of four sets of unstable heavy atomic nuclei that undergo a series of alpha decay and beta decay until a stable nucleus is achieved. The natural series are the thorium series, the uranium series, and the actinium series. These are headed by naturally occurring species of unstable nuclei that have half-lives comparable to the age of the earth. The fourth set, the neptunium series, is headed by neptunium-237, which has a half-life of 2 million years. Its members do not occur naturally but are artificially produced by nuclear reactions and have short half-lives
radioactive waste: useless radioactive materials that are left after some laboratory or commercial process is completed
radioactive waste: harmful radioactive substances that remain after energy has been produced in a nuclear reactor
radioactive waste: remnants that spew out radioactive rays
radioactively: Using a radioactive substance
high-level radioactive waste: radioactive waste that left in a nuclear reactor after the nuclear fuel has been consumed
low-level radioactive waste: (medicine) radioactive waste consisting of objects that have been briefly exposed to radioactivity (as in certain medical tests)
radioactively: in a radioactive manner; "radioactively labeled
radioactively: Concerning radioactivity
radioactively: by emitting energy particles during atomic decay

radioactive

Hyphenation

ra·di·o·ac·tive

Turkish pronunciation

reydiōäktîv

Pronunciation

/ˌrādēōˈaktəv/ /ˌreɪdiːoʊˈæktɪv/

Etymology

[ "rA-dE-O-'ak-tiv ] (adjective.) 1898. International Scientific Vocabulary.

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radioactive

Definition of radioactive in English Turkish dictionary

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Definition of radioactive in English English dictionary

Related Terms

Hyphenation

Turkish pronunciation

Pronunciation

Etymology

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