(n.) An alloy of gold and silver with a large proportion of copper or other base metal, used in coinage.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). billon. Retrieved October 1, 2026, from http://smartdefine.org/billon/definitions/1980321 |
| Chicago | Webster's. 2011. "billon" http://smartdefine.org/billon/definitions/1980321 (accessed October 1, 2026). |
| Harvard | Webster's 2011, billon, Smart Define, viewed 1 October, 2026, <http://smartdefine.org/billon/definitions/1980321>. |
| MLA | Webster's. "billon" 27 May 2011. Web. 1 October 2026. <http://smartdefine.org/billon/definitions/1980321> |