(n.) That stage in the development of the ovum in which the outer cells of the morula become more defined and form the blastoderm.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). blastula. Retrieved September 21, 2026, from http://smartdefine.org/blastula/definitions/1980853 |
| Chicago | Webster's. 2011. "blastula" http://smartdefine.org/blastula/definitions/1980853 (accessed September 21, 2026). |
| Harvard | Webster's 2011, blastula, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/blastula/definitions/1980853>. |
| MLA | Webster's. "blastula" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/blastula/definitions/1980853> |