Meaning of “precursor” in the English Dictionary

british dictionary

"precursor" in British English

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precursornoun [ C ]

uk /ˌpriːˈkɜː.sər/ us /ˌpriːˈkɝː.sɚ/ formal

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

"precursor" in American English

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precursornoun [ C ]

us /prɪˈkɜr·sər, ˈpriˌkɜr-/

something that comes before another and may lead to it or influence its development:

Opponents fear this would be a precursor to development of the entire canyon.

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