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Definitions of isotope
  1. noun
    one of two or more atoms with the same atomic number but with different numbers of neutrons
    type of:
Definition that contains isotope
  • no a radioactive transuranic element synthesized by bombarding curium with carbon ions; 7 isotopes are known
  • u a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons
  • heavy (physics, chemistry) being or containing an isotope with greater than average atomic mass or weight
  • pm 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
  • th 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
  • label distinguish (an element or atom) by using a radioactive isotope or an isotope of unusual mass for tracing through chemical reactions
  • label a radioactive isotope that is used in a compound in order to trace the mechanism of a chemical reaction
  • uranium a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons
  • abundance (physics) the ratio of the number of atoms of a specific isotope of an element to the total number of isotopes present
  • plutonium 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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