noun
- The membrane that lines the cavities of the heart and forms part of the heart valves. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). endocardium. Retrieved September 20, 2026, from http://smartdefine.org/endocardium/definitions/1212911 |
| Chicago | WordNet. 2010. "endocardium" http://smartdefine.org/endocardium/definitions/1212911 (accessed September 20, 2026). |
| Harvard | WordNet 2010, endocardium, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/endocardium/definitions/1212911>. |
| MLA | WordNet. "endocardium" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/endocardium/definitions/1212911> |