English Explanatory Dictionary

halogen

English dictionary entry

Meanings

noun
  1. Any element of group 17, i.e. fluorine, chlorine, bromine, iodine, astatine and tennessine.
  2. A light fixture in which the filament is surrounded by an atmosphere of a halogen gas.

Pronunciation

hălʹə-jən hāʹlə-jən /ˈhæl.ə.d͡ʒən/ /ˈheɪ.lə.d͡ʒən/ LL-Q1860 (eng)-Vealhurl-halogen.wav

Word forms

halogen halogens

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”).

Related words

halide halite

Derived words

dehydrohalogenate dihalogen halogenase halogenate halogenation halogenite halogen lamp halogenoderma halogenous halogen oven halogen stove halon halothane interhalogen nonhalogen organohalogen radiohalogen
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