noun
- The number that is represented as a one followed by 24 zeros.
- usage: "in England they call a septillion a quadrillion"
- The number that is represented as a one followed by 15 zeros. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). quadrillion. Retrieved September 21, 2026, from http://smartdefine.org/quadrillion/definitions/1244469 |
| Chicago | WordNet. 2010. "quadrillion" http://smartdefine.org/quadrillion/definitions/1244469 (accessed September 21, 2026). |
| Harvard | WordNet 2010, quadrillion, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/quadrillion/definitions/1244469>. |
| MLA | WordNet. "quadrillion" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/quadrillion/definitions/1244469> |