noun
- A fine-grained metamorphic rock formed by the action of heat on clay rocks.
- synonyms: hornfels
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). hornstone. Retrieved September 20, 2026, from http://smartdefine.org/hornstone/definitions/1285613 |
| Chicago | WordNet. 2010. "hornstone" http://smartdefine.org/hornstone/definitions/1285613 (accessed September 20, 2026). |
| Harvard | WordNet 2010, hornstone, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/hornstone/definitions/1285613>. |
| MLA | WordNet. "hornstone" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/hornstone/definitions/1285613> |