MEANING
A form of an element whose atoms have the same proton number but a different neutron number from another form.
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Words that belong together
- radioactive isotope
- stable isotope
On the page
The sample contained an unusual isotope ratio.
A stable isotope helped trace the water’s origin.
Related words
Word forms
- Base
- isotope
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Usage notes
Primary category: sci-fi. Forms: Singular isotope; plural isotopes. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.
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