[mil-yuh-nair] /ˌmɪl yəˈnɛər/

a person whose wealth amounts to a million or more in some unit of currency, as dollars.
any very rich person.
a person whose assets are worth at least a million of the standard monetary units of his country

1821, from French millionnaire (1762); see million. The first in America is said to have been John Jacob Astor (1763-1848).

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