noun
- A very rich person whose material wealth is valued at more than a billion dollars. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). billionaire. Retrieved September 20, 2026, from http://smartdefine.org/billionaire/definitions/1231843 |
| Chicago | WordNet. 2010. "billionaire" http://smartdefine.org/billionaire/definitions/1231843 (accessed September 20, 2026). |
| Harvard | WordNet 2010, billionaire, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/billionaire/definitions/1231843>. |
| MLA | WordNet. "billionaire" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/billionaire/definitions/1231843> |