- (n.) The outer layer of the blastoderm; epiblast.
- (n.) The external skin or outer layer of an animal or plant, this being formed in an animal from the epiblast. See Illust. of Blastoderm.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). ectoderm. Retrieved September 21, 2026, from http://smartdefine.org/ectoderm/definitions/2001555 |
| Chicago | Webster's. 2011. "ectoderm" http://smartdefine.org/ectoderm/definitions/2001555 (accessed September 21, 2026). |
| Harvard | Webster's 2011, ectoderm, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/ectoderm/definitions/2001555>. |
| MLA | Webster's. "ectoderm" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/ectoderm/definitions/2001555> |