isotope
noun
iso·tope
ˈī-sə-ˌtōp 
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
Examples of isotope in a Sentence
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Indeed, the vegetation that the rhinos ate and the soil and bedrock that supported that vegetation shared similar ratios of carbon, oxygen, and strontium isotopes, and those isotopes made their way to the rhinos’ teeth during feeding.
—
Sam Walters, Discover Magazine, 10 Apr. 2025
At low temperatures, the most common magnesium in a dolomite crystal is isotope 26.
—David Bressan, Forbes.com, 8 Apr. 2025
Many of them focus on radically new technologies for heating and compressing plasmas, or fusing unusual combinations of isotopes.
—ArsTechnica, 1 Apr. 2025
At the same time, some of the material in the Chang'e 6 samples deviated from those of the Apollo missions in terms of the ratio of certain Uranium and Lead isotopes.
—Andrew Jones, Space.com, 18 Mar. 2025
See All Example Sentences for isotope
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Sam Walters, Discover Magazine, 10 Apr. 2025
At low temperatures, the most common magnesium in a dolomite crystal is isotope 26.
—David Bressan, Forbes.com, 8 Apr. 2025
Many of them focus on radically new technologies for heating and compressing plasmas, or fusing unusual combinations of isotopes.
—ArsTechnica, 1 Apr. 2025
At the same time, some of the material in the Chang'e 6 samples deviated from those of the Apollo missions in terms of the ratio of certain Uranium and Lead isotopes.
—Andrew Jones, Space.com, 18 Mar. 2025
See All Example Sentences for isotope
Cite this Entry
“Isotope.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/isotope. Accessed 24 Apr. 2025.
Copy CitationKids Definition
isotope
noun
iso·tope
ˈī-sə-ˌtōp
: any of the forms of an element that differ in the number of neutrons in an atom
Medical Definition
isotope
noun
iso·tope
ˈī-sə-ˌtōp
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
2
: nuclide
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