Halogen

//ˈhæl.ə.d͡ʒən// noun

noun ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    Any element of group 17, i.e. fluorine, chlorine, bromine, iodine, astatine and tennessine.
  2. 2
    any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions wordnet
  3. 3
    A light fixture in which the filament is surrounded by an atmosphere of a halogen gas.

Synonyms

All synonyms
alcoholchemicalfluorine groupgroup 16group 17

Example

More examples

"Iodine is the name for the element with atomic number 53 and is represented by the symbol I. It is a member of the halogen group."

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 phrases

halogen lamphalogen ovenhalogen stovelight fixturequartz halogen lamp

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.