Definition of “alpha particle” - English Dictionary

british dictionary

“alpha particle” in British English

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alpha particlenoun [ C ]

uk /ˈæl.fə ˌpɑː.tɪ.kəl/ us /ˈæl.fə ˌpɑːr.t̬ə.kəl/ specialized

(Definition of “alpha particle” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“alpha particle” in American English

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alpha particlenoun [ C ]

/ˈæl·fə ˌpɑr·t̬ɪ·kəl /

physics a very small unit of matter with a positive electrical charge that is sent out by some radioactive substances

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