имя существительное [химия] галоген
галоген, галоид; галогенный, галогеновый, галоидный
галоген
I. noun Etymology: Swedish, from hal- + -gen 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 • halogenous adjective II. adjective containing, using, or being a halogen Example: a halogen lamp