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English definition of “predecessor”

predecessor

noun [C]     /ˈpriːdɪˌsesər/ US   /ˈpredəsesər/
the person who had a particular job or position before someone else: His predecessor had left him with many problems to address in the department.
a machine, system, law, etc. that has been replaced by a new one: The new model retains all the advantages of its predecessor but offers five times the speed.
(Definition of predecessor noun from the Cambridge Business English Dictionary © Cambridge University Press)
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