(n.) An electro-negative element or radical, which, by combination with a metal, forms a haloid salt; especially, chlorine, bromine, and iodine; sometimes, also, fluorine and cyanogen. See Chlorine family, under Chlorine.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). halogen. Retrieved September 20, 2026, from http://smartdefine.org/halogen/definitions/2014776 |
| Chicago | Webster's. 2011. "halogen" http://smartdefine.org/halogen/definitions/2014776 (accessed September 20, 2026). |
| Harvard | Webster's 2011, halogen, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/halogen/definitions/2014776>. |
| MLA | Webster's. "halogen" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/halogen/definitions/2014776> |