Meaning of “isotope” in the English Dictionary

american-english dictionary

"isotope" in British English

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isotopenoun [ C ]

uk /ˈaɪ.sə.təʊp/ us /ˈaɪ.sə.toʊp/ specialized

a form of an atom that has a different atomic weight from other forms of the same atom but the same chemical structure:

a radioactive isotope of hydrogen

(Definition of “isotope” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"isotope" in American English

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isotopenoun [ C ]

us /ˈɑɪ·səˌtoʊp/

physics, chemistry a form of an atom which has a different atomic mass from other forms of the same atom but the same chemical structure

(Definition of “isotope” from the Cambridge Academic Content Dictionary © Cambridge University Press)