The Collaborative International Dictionary of English v.0.48:
Millionnaire \Mil`lion`naire"\, n. [F.] Millionaire. [1913 Webster]The Collaborative International Dictionary of English v.0.48:
Millionaire \Mil`lion*aire"\ (?; 277), n. [F. millionnaire.] One whose wealth is counted by millions of francs, dollars, or pounds; a very rich person; a person worth a million or more. [Written also millionnaire.] [1913 Webster]