noun
- Thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals. ).
- synonyms: amniotic sac, amnios
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). amnion. Retrieved September 22, 2026, from http://smartdefine.org/amnion/definitions/1194957 |
| Chicago | WordNet. 2010. "amnion" http://smartdefine.org/amnion/definitions/1194957 (accessed September 22, 2026). |
| Harvard | WordNet 2010, amnion, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/amnion/definitions/1194957>. |
| MLA | WordNet. "amnion" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/amnion/definitions/1194957> |