(n.) A name formerly applied rather loosely to certain dark-colored igneous rocks, including diorite, diabase, etc.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). greenstone. Retrieved September 20, 2026, from http://smartdefine.org/greenstone/definitions/2013652 |
| Chicago | Webster's. 2011. "greenstone" http://smartdefine.org/greenstone/definitions/2013652 (accessed September 20, 2026). |
| Harvard | Webster's 2011, greenstone, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/greenstone/definitions/2013652>. |
| MLA | Webster's. "greenstone" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/greenstone/definitions/2013652> |