noun
- Double-walled stage of the embryo resulting from invagination of the blastula; the outer layer of cells is the ectoderm and the inner layer differentiates into the mesoderm and endoderm. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). gastrula. Retrieved September 20, 2026, from http://smartdefine.org/gastrula/definitions/1194910 |
| Chicago | WordNet. 2010. "gastrula" http://smartdefine.org/gastrula/definitions/1194910 (accessed September 20, 2026). |
| Harvard | WordNet 2010, gastrula, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/gastrula/definitions/1194910>. |
| MLA | WordNet. "gastrula" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/gastrula/definitions/1194910> |