Hyperonyms
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14619225-n:
(physics and chemistry) the smallest component of an element having the chemical properties of the element
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Hyponyms
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14619857-n:
a radioactive isotope of an element; produced either naturally or artificially
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Hyponyms
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14641046-n:
an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)
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Related
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02902531-a:
of or relating to or having the relation of an isotope
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Related
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02902531-a:
of or relating to or having the relation of an isotope
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Glosses
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09369520-n:
an elementary particle with 0 charge and mass about equal to a proton; enters into the structure of the atomic nucleus
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Glosses
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13598715-n:
the order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element
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Glosses
(gloss)
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14619225-n:
(physics and chemistry) the smallest component of an element having the chemical properties of the element
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Glosses
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00650932-v:
distinguish (an element or atom) by using a radioactive isotope or an isotope of unusual mass for tracing through chemical reactions
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Glosses
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01191227-a:
(physics, chemistry) being or containing an isotope with greater than average atomic mass or weight
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Glosses
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02902531-a:
of or relating to or having the relation of an isotope
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Glosses
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04462835-n:
(radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes
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Glosses
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09194052-n:
a positively charged particle that is the nucleus of the helium atom; emitted from natural or radioactive isotopes
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Glosses
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09219592-n:
a high-speed electron or positron emitted in the decay of a radioactive isotope
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Glosses
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11307587-n:
English chemist whose work on radioactive disintegration led to the discovery of isotopes (1877-1956)
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Glosses
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13645599-n:
a unit of radioactivity equal to the amount of a radioactive isotope that decays at the rate of 37,000,000,000 disintegrations per second
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Glosses
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13820239-n:
(physics) the ratio of the number of atoms of a specific isotope of an element to the total number of isotopes present
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Glosses
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14611521-n:
a radioactive isotope of hydrogen; atoms of tritium have three times the mass of ordinary hydrogen atoms
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Glosses
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14619857-n:
a radioactive isotope of an element; produced either naturally or artificially
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Glosses
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14620066-n:
a radioactive isotope that is used in a compound in order to trace the mechanism of a chemical reaction
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Glosses
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14633856-n:
a radioactive isotope of carbon
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Glosses
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14634477-n:
a radioactive isotope of cesium used in radiation therapy
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Glosses
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14634999-n:
a radioactive isotope of chlorine
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Glosses
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14635542-n:
a radioactive isotope of cobalt with mass number 60; a source of exceptionally intense gamma rays; used in radiation therapy
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Glosses
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14641046-n:
an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)
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Glosses
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14641797-n:
heavy radioactive isotope of iodine with a half-life of 8 days; used in a sodium salt to diagnose thyroid disease and to treat goiter
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Glosses
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14642005-n:
light radioactive isotope of iodine with a half-life of 60 days; used as a tracer in thyroid studies and as a treatment for hyperthyroidism
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Glosses
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14647722-n:
a radioactive transuranic element synthesized by bombarding curium with carbon ions; 7 isotopes are known
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Glosses
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14649775-n:
a solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons; found in minute quantities in uranium ores but is usually synthesized in nuclear reactors; 13 isotopes are known with the most important being plutonium 239
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Glosses
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14650137-n:
a highly fissionable isotope of plutonium that is used in atomic weapons and as a reactor fuel; produced by irradiating uranium 238 with slow electrons
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Glosses
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14651479-n:
a soft silvery metallic element of the rare earth group having no stable isotope; was discovered in radioactive form as a fission product of uranium
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Glosses
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14656001-n:
a radioactive isotope of strontium (with the mass number 90) that is present in the fallout from nuclear explosions; can be assimilated like calcium into bones
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Glosses
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14658109-n:
a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands
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Glosses
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14658422-n:
radioactive isotope of thorium with mass number 228
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Glosses
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14658546-n:
a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime
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Glosses
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14660443-n:
a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons
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Glosses
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14660700-n:
a uranium isotope with mass number 235; capable of sustaining chain reactions
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Glosses
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14660835-n:
the commonest isotope of uranium; it is not fissionable but when irradiated with neutrons it produces fissionable plutonium 239
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Glosses
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14827979-n:
any of three isotopes of a colorless aromatic liquid hydrocarbon occurring in the volatile oil of cumin and thyme and used in the manufacture of synthetic resins
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