(n.) The formation situated between the Permian and Lias, and so named by the Germans, because consisting of three series of strata, which are called in German the Bunter sandstein, Muschelkalk, and Keuper.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Trias. Retrieved September 24, 2026, from http://smartdefine.org/trias/definitions/2074480 |
| Chicago | Webster's. 2011. "Trias" http://smartdefine.org/trias/definitions/2074480 (accessed September 24, 2026). |
| Harvard | Webster's 2011, Trias, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/trias/definitions/2074480>. |
| MLA | Webster's. "Trias" 28 May 2011. Web. 24 September 2026. <http://smartdefine.org/trias/definitions/2074480> |