Definition of "zillionaire" []

• Informal One having an immense, incalculable amount of wealth. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Hell, in those terms our zillionaire CEO class sounds like a great deal!"
• "He's a major party nominee, a Member of Congress and the winner of a hotly contested primary over a self-financed zillionaire."
• "Virgin Galactic zillionaire Richard Branson is looking to turn space tourism into a leisure activity for the wealthy, whereas now it is simply a leisure activity for fellow zillionaires."