(n.) The thousandish part of a micron or the millionth part of a millimeter; -- a unit of length used in measuring light waves, etc.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). millimicron. Retrieved September 22, 2026, from http://smartdefine.org/millimicron/definitions/2032795 |
| Chicago | Webster's. 2011. "millimicron" http://smartdefine.org/millimicron/definitions/2032795 (accessed September 22, 2026). |
| Harvard | Webster's 2011, millimicron, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/millimicron/definitions/2032795>. |
| MLA | Webster's. "millimicron" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/millimicron/definitions/2032795> |