(n.) According to the French method of numeration (which is followed also in the United States), the number expressed by a unit with twenty-four ciphers annexed. According to the English method, the number expressed by a unit with forty-two ciphers annexed. See Numeration.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). septillion. Retrieved September 26, 2026, from http://smartdefine.org/septillion/definitions/2060570 |
| Chicago | Webster's. 2011. "septillion" http://smartdefine.org/septillion/definitions/2060570 (accessed September 26, 2026). |
| Harvard | Webster's 2011, septillion, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/septillion/definitions/2060570>. |
| MLA | Webster's. "septillion" 28 May 2011. Web. 26 September 2026. <http://smartdefine.org/septillion/definitions/2060570> |