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English definition of “billionaire”

billionaire

noun [C]     /ˌbɪljəˈneər/ US   /-ˈner/
a person who has money, property, etc. that is worth at least a billion dollars, pounds, euros, etc.: The new mayor is a billionaire with no prior government experience.
(Definition of billionaire noun from the Cambridge Business English Dictionary © Cambridge University Press)
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