multimillionaire
noun/ˌmʌltimɪljəˈneə(r)/
/ˌmʌltimɪljəˈner/, /ˌmʌltaɪmɪljəˈner/
- a person who has money and possessions worth several million pounds, dollars, etc.
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multimillionaire
Definition of multimillionaire noun from the Oxford Advanced Learner's Dictionary