meaning of halogen
1. 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.
2. any of five related nonmetallic elements fluorine or chlorine or bromine or iodine or astatine that are all monovalent and readily form negative ions
Related Words
halogen | halogenous |
