halogen
English edit
Etymology edit
From Ancient Greek ἅλς (háls, “salt" or "sea”) + γεν- (gen-), "to produce" (coined by Berzelius in 1842).[1]
Pronunciation edit
Noun edit
halogen (plural halogens)
- (chemistry) Any element of group 17, i.e. fluorine, chlorine, bromine, iodine, astatine and tennessine.
- A light fixture in which the filament is surrounded by an atmosphere of a halogen gas.
Usage notes edit
When the term was coined, all known group 17 elements formed salts on reaction with a metal. This may not be true for the recently discovered superheavy element tennessine, though experiments cannot yet be carried out because of its short lifetime. Chemists usually include tennessine as a halogen to extend the term to all of group 17, though those specialising in the chemistry of superheavy elements may exclude it.
Derived terms edit
Related terms edit
Translations edit
|
|
References edit
- ^ Douglas Harper (2001–2024), “halogen”, in Online Etymology Dictionary.
Further reading edit
Catalan edit
Etymology edit
Pronunciation edit
Noun edit
halogen m (plural halogens)
Derived terms edit
Further reading edit
- “halogen” in Diccionari de la llengua catalana, segona edició, Institut d’Estudis Catalans.
Czech edit
Pronunciation edit
Noun edit
halogen m inan
- halogen
- Synonym: halový prvek
Declension edit
This noun needs an inflection-table template.
Further reading edit
Norwegian Bokmål edit
Etymology edit
From Ancient Greek ἅλς (háls, “salt" or "sea”) + -gen.
Noun edit
halogen n (definite singular halogenet, indefinite plural halogen or halogener, definite plural halogena or halogenene)
References edit
Norwegian Nynorsk edit
Etymology edit
From Ancient Greek ἅλς (háls) + -gen.
Noun edit
halogen n (definite singular halogenet, indefinite plural halogen, definite plural halogena)
References edit
- “halogen” in The Nynorsk Dictionary.
Romanian edit
Etymology edit
Borrowed from French halogène.
Adjective edit
halogen m or n (feminine singular halogenă, masculine plural halogeni, feminine and neuter plural halogene)
Declension edit
singular | plural | ||||||
---|---|---|---|---|---|---|---|
masculine | neuter | feminine | masculine | neuter | feminine | ||
nominative/ accusative |
indefinite | halogen | halogenă | halogeni | halogene | ||
definite | halogenul | halogena | halogenii | halogenele | |||
genitive/ dative |
indefinite | halogen | halogene | halogeni | halogene | ||
definite | halogenului | halogenei | halogenilor | halogenelor |
Welsh edit
Etymology edit
Borrowed from English halogen.
Pronunciation edit
- (North Wales) IPA(key): /haˈlɔɡɛn/
- (South Wales) IPA(key): /haˈloːɡɛn/, /haˈlɔɡɛn/
- Rhymes: -ɔɡɛn
Noun edit
halogen m (plural halogenau, not mutable)
- (chemistry) halogen
- 1937, R. O. Davies, Elfennau Cemeg (Elements of Chemistry), University of Wales Press:
- 1937, R. O. Davies, Elfennau Cemeg (Elements of Chemistry), University of Wales Press:
Related terms edit
- halid (“halide”)
References edit
- R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “halogen”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies