- (n.) One of the Diatomaceae, a family of minute unicellular Algae having a siliceous covering of great delicacy, each individual multiplying by spontaneous division. By some authors diatoms are called Bacillariae, but this word is not in general use.
- (n.) A particle or atom endowed with the vital principle.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). diatom. Retrieved September 24, 2026, from http://smartdefine.org/diatom/definitions/1997314 |
| Chicago | Webster's. 2011. "diatom" http://smartdefine.org/diatom/definitions/1997314 (accessed September 24, 2026). |
| Harvard | Webster's 2011, diatom, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/diatom/definitions/1997314>. |
| MLA | Webster's. "diatom" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/diatom/definitions/1997314> |