Definition of isotope
1 : any of two or more species of atoms of a chemical element with the same atomic number and nearly identical chemical behavior but with differing atomic mass or mass number and different physical properties
2 : nuclide
isotopicplay \ˌī-sə-ˈtä-pik, -ˈtō-\ adjective
isotopicallyplay \ˌī-sə-ˈtä-pi-k(ə-)lē, -ˈtō-\ adverb
Recent Examples of isotope from the web
Scientists estimate that the moon holds ____________ metric tons of the rare isotope helium-3, and 40 tons could power the U.S. for a year.
But the subtle anomalies in tungsten and other isotope concentrations are now providing the first glimpses of the planet’s formation and differentiation.
The 60 million-year-old flood basalts of Baffin Bay, Greenland, sampled by the geochemist Hanika Rizo (center) and colleagues, contain isotope traces that originated more than 4.5 billion years ago.
Matthew Bunn, a specialist in nuclear security at Harvard’s John F. Kennedy School of Government, said another worry was the byproducts of the isotopes made at Mol, such as Cesium-137.
The official whose family was watched works at Mol, one of five research reactors worldwide that produce 90 percent of the radio isotopes used for medical diagnosis and treatment.
The commission admits that tritium in the groundwater will reach the Hudson River and that the radioactive isotope, for which there is no safe dose, can cause cancer.
This month, Entergy revealed that radioactive water was found in three of 40 monitoring wells on site, the result of contamination from tritium, a radioactive isotope.
A. A hydrogen bomb, also known as a thermonuclear bomb, combines hydrogen isotopes under extremely high temperatures to form helium, in a process known as nuclear fusion.
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Origin and Etymology of isotope
is- + Greek topos place
First Known Use: 1913
ISOTOPE Defined for English Language Learners
Definition of isotope for English Language Learners
chemistry : any one of various forms in which the atoms of a chemical element can occur
Medical Definition of isotope
1: any of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behavior but with differing atomic mass or mass number and different physical properties
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