isotope

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Pronunciation[change]

  • (UK) IPA: /ˈaɪ.sə.təʊp/
  • (US) IPA: /ˈaɪ.sə.toʊp/
  • (file)

Noun[change]

Singular
isotope

Plural
isotopes

  1. (chemistry); (physics) Isotopes are atomic cores belonging to the same element that have the same number of protons, but have a different number of neutrons.
    Uranium 235 and uranium 238 are isotopes of uranium.
    Deutherium is an isotope of oxygen that has two neutrons.