noun
- German biologist and philosopher; advocated Darwinism and formulated the theory of recapitulation; was an exponent of materialistic monism (1834-1919. ).
- synonyms: Ernst Heinrich Haeckel
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). Haeckel. Retrieved September 20, 2026, from http://smartdefine.org/haeckel/definitions/1233835 |
| Chicago | WordNet. 2010. "Haeckel" http://smartdefine.org/haeckel/definitions/1233835 (accessed September 20, 2026). |
| Harvard | WordNet 2010, Haeckel, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/haeckel/definitions/1233835>. |
| MLA | WordNet. "Haeckel" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/haeckel/definitions/1233835> |