(n.) A common mineral of a pale brass-yellow color and brilliant metallic luster, crystallizing in the isometric system; iron pyrites; iron disulphide.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). pyrite. Retrieved September 26, 2026, from http://smartdefine.org/pyrite/definitions/2051357 |
| Chicago | Webster's. 2011. "pyrite" http://smartdefine.org/pyrite/definitions/2051357 (accessed September 26, 2026). |
| Harvard | Webster's 2011, pyrite, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/pyrite/definitions/2051357>. |
| MLA | Webster's. "pyrite" 27 May 2011. Web. 26 September 2026. <http://smartdefine.org/pyrite/definitions/2051357> |