noun
- A natural cavity or hollow in a bone. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). Antrum. Retrieved September 21, 2026, from http://smartdefine.org/antrum/definitions/1212337 |
| Chicago | WordNet. 2010. "Antrum" http://smartdefine.org/antrum/definitions/1212337 (accessed September 21, 2026). |
| Harvard | WordNet 2010, Antrum, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/antrum/definitions/1212337>. |
| MLA | WordNet. "Antrum" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/antrum/definitions/1212337> |