(n.) A basic, dark-colored, holocrystalline, igneous rock, consisting essentially of a triclinic feldspar and pyroxene with magnetic iron; -- often limited to rocks pretertiary in age. It includes part of what was early called greenstone.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). diabase. Retrieved September 21, 2026, from http://smartdefine.org/diabase/definitions/1997119 |
| Chicago | Webster's. 2011. "diabase" http://smartdefine.org/diabase/definitions/1997119 (accessed September 21, 2026). |
| Harvard | Webster's 2011, diabase, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/diabase/definitions/1997119>. |
| MLA | Webster's. "diabase" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/diabase/definitions/1997119> |