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billionaire

American  
[bil-yuh-nair, bil-yuh-nair] / ˌbɪl yəˈnɛər, ˈbɪl yəˌnɛər /

noun

  1. a person who has assets worth a billion or more dollars, euros, etc.


billionaire British  
/ ˌbɪljəˈnɛə /

noun

  1. a person whose assets are worth over a billion of the monetary units of his country

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of billionaire

First recorded in 1855–60, billion + -aire, on the model of millionaire

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Since entering politics in 2011, Czech Prime Minister Andrej Babis has been grappling with a conflict of interest as a billionaire businessman and politician, and his latest stint in power is no exception.

From Barron's

The effort is funded by Silicon Valley billionaires.

From Los Angeles Times

The coffee-chain founder — who has a net worth of $3.5 billion, according to Forbes — joins a slew of other billionaires who have moved to the Sunshine State in just the past few months.

From MarketWatch

Investors balked at the billionaire’s 2024 attempt to raise money for a new fund.

From The Wall Street Journal

Ruth, a fashion designer who quits the high-pressure world to become a teacher, acts as a contrast to the hustle culture-inspired ambitions of wannabe billionaire Becket, Henwick says.

From BBC