Definify.com
Webster 1913 Edition
Halogen
Hal′o-gen
(hăl′ō̍-jĕn)
, Noun.
[Gr.
ἄλς
, ἁλός
, salt + -gen
: cf. F. halogène
.] (Chem.)
An electro-negative element or radical, which, by combination with a metal, forms a haloid salt; especially, chlorine, fluorine, bromine, and iodine; sometimes, also cyanogen. See
Chlorine family
, under Chlorine
.