(n.) According to the French and American method of numeration, a thousand millions or 1,000,000,000; according to the English method, a million millions or 1,000,000,000,000. See Numeration.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). billion. Retrieved September 21, 2026, from http://smartdefine.org/billion/definitions/1980318 |
| Chicago | Webster's. 2011. "billion" http://smartdefine.org/billion/definitions/1980318 (accessed September 21, 2026). |
| Harvard | Webster's 2011, billion, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/billion/definitions/1980318>. |
| MLA | Webster's. "billion" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/billion/definitions/1980318> |