noun
- The lower layer of the crust. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). asthenosphere. Retrieved September 22, 2026, from http://smartdefine.org/asthenosphere/definitions/1226597 |
| Chicago | WordNet. 2010. "asthenosphere" http://smartdefine.org/asthenosphere/definitions/1226597 (accessed September 22, 2026). |
| Harvard | WordNet 2010, asthenosphere, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/asthenosphere/definitions/1226597>. |
| MLA | WordNet. "asthenosphere" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/asthenosphere/definitions/1226597> |