First Known Use: 1842
Dictionary
1halogen
noun hal·o·gen \ˈha-lə-jən\
Definition of HALOGEN
: any of the five elements fluorine, chlorine, bromine, iodine, and astatine that form part of group VIIA of the periodic table and exist in the free state normally as diatomic molecules
— ha·log·e·nous \ha-ˈlä-jə-nəs\ adjective
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Origin of HALOGEN
Swedish, from hal- + -gen
2halogen
adjective
Definition of HALOGEN
: containing, using, or being a halogen <a halogen lamp>
First Known Use of HALOGEN
1880
Medical Dictionary
halogen
noun halo·gen \ˈhal-ə-jən\
Medical Definition of HALOGEN
: any of the five elements fluorine, chlorine, bromine, iodine, and astatine that form part of group VII A of the periodic table and exist in the free state normally as diatomic molecules
—ha·log·e·nous \ha-ˈläj-ə-nəs\ adjective
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