(n.) Any microscopic form of life; -- particularly applied to bacteria and similar organisms, especially such are supposed to cause infectious diseases.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). microorganism. Retrieved September 25, 2026, from http://smartdefine.org/microorganism/definitions/2032576 |
| Chicago | Webster's. 2011. "microorganism" http://smartdefine.org/microorganism/definitions/2032576 (accessed September 25, 2026). |
| Harvard | Webster's 2011, microorganism, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/microorganism/definitions/2032576>. |
| MLA | Webster's. "microorganism" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/microorganism/definitions/2032576> |