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isotope definition

iso·tope (ī′sə tōp′)

noun

any of two or more forms of an element having the same or very closely related chemical properties and the same atomic number but different atomic weights (or mass numbers) U-235, U-238, and U-239 are three isotopes of uranium

Etymology: < iso- + Gr topos, place: see topic

Related Forms:

  • isotopic i′so·top′ic (-täp′ik, -tō′pik) adjective
  • isotopically i′so·top′i·cally adverb
  • isotopy isot′·opy (ī sät′ə pē, īs′ə tō′pē) noun

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