halogen
/ˈhæl.ə.d͡ʒən/
HÆL · ə · d͡ʒən (3 syllables)
English
Noun
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Definition
Any element of group 17, i.e. fluorine, chlorine, bromine, iodine, astatine and tennessine.
Etymology
From Ancient Greek ἅλς (háls, “salt" or "sea”) + γεν- (gen-), "to produce" (coined by Berzelius in 1842). By surface analysis, halo- (“salt”) + -gen (“forming”).
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