Definition from Wiktionary, the free dictionary
multibillionaire (plural multibillionaires)
- A person with a net worth of multiple billions, typically measured in US dollars.
2007 June 16, Diane Cardwell, “A Gadfly Becomes Persona Non Grata in City Hall”, in New York Times:
- But it took Mayor Michael R. Bloomberg, the multibillionaire with a reputation for cool-headedness, to actually bar him, beginning in April, from City Hall news conferences.