fluor

See also: fluor-, Fluor, flúor, fluór, and flüor

Languages (23)

English

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Page categories

English

Etymology

Etymology tree

Proto-Indo-European *bʰel-der.

Proto-Indo-European *bʰlewH-der.

Proto-Indo-European *bʰluH-yé-ti?

Latin fluō

Proto-Indo-European *-os

Proto-Indo-European *-s

Proto-Indo-European *-ōs

Proto-Italic *-ōs

Latin -or

Latin fluorbor.

English fluor

Borrowed from Latin fluor.

Pronunciation

• (US) IPA^(key): /fluɔɹ/

• Audio (Southern England):

  (file)

Noun

fluor (countable and uncountable, plural fluors)

2. (dated) The mineral fluorite.
3. (obsolete) A flow or flux.
4. (obsolete, in the plural) Menstrual periods.

   Synonym: flowers

Derived terms

• fluor albus
• fluorine
• fluorite
• fluoroid
• fluorspar

Related terms

• fluoranthene
• fluorescence
• fluorophor, fluorophore
• fluorosis

See also

• fluor-

Anagrams

• flour, four L, furol, orful, rufol

Basque

Chemical element (edit)
F Atomic number 9 fluor
Classification data Period 2 Group 17 Block p-block Class halogen
Previous: ← oxigeno (O)
Next: neon (Ne) →

Pronunciation

• IPA^(key): /fluor/ [flu.or]

• Audio:

  (file)

• Rhymes: -uor, -or
• Hyphenation: flu‧or

Noun

fluor inan

1. fluorine

Declension

Declension of fluor (inan sg-only C-stem)

	indefinite	singular
absolutive	fluor	fluorra
ergative	—	fluorrak
dative	—	fluorrari
genitive	—	fluorraren
comitative	—	fluorrarekin
causative	—	fluorrarengatik
benefactive	—	fluorrarentzat
instrumental	fluorrez	fluorraz
inessive	—	fluorrean
locative	—	fluorreko
allative	—	fluorrera
terminative	—	fluorreraino
directive	—	fluorrerantz
destinative	—	fluorrerako
ablative	—	fluorretik
partitive	fluorrik	—
prolative	fluortzat	—

Further reading

• “fluor”, in Euskaltzaindiaren Hiztegia [Dictionary of the Basque Academy] (in Basque), Euskaltzaindia [Royal Academy of the Basque Language]
• “fluor”, in Orotariko Euskal Hiztegia [General Basque Dictionary], Euskaltzaindia, 1987–2005

Catalan

Chemical element (edit)
F Atomic number 9 fluor
Classification data Period 2 Group 17 Block p-block Class halogen
Previous: ← oxigen (O)
Next: neó (Ne) →

Etymology

Learned borrowing from Latin fluōrem (“flowing”).

Pronunciation

• IPA^(key): (Northern) [fluˈur]
• IPA^(key): (Balearic, Central, Valencia, Northwestern) [fluˈor]

• Audio (Valencia):

  (file)

Noun

fluor m (uncountable)

1. fluorine

Derived terms

• fluorar
• fluorur

Further reading

• “fluor”, in Diccionari de la llengua catalana [Dictionary of the Catalan Language] (in Catalan), second edition, Institute of Catalan Studies [Catalan: Institut d'Estudis Catalans], April 2007
• “fluor”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2026
• “fluor” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua.
• Alcover, Antoni Maria; Moll, Francesc de Borja (1963), “fluor”, in Diccionari català-valencià-balear (in Catalan)

Czech

Chemical element (edit)
F Atomic number 9 fluor
Classification data Period 2 Group 17 Block p-block Class halogen
Previous: ← kyslík (O)
Next: neon (Ne) →

Alternative forms

• fluór

Etymology

Etymology tree

Proto-Indo-European *bʰel-der.

Proto-Indo-European *bʰlewH-der.

Proto-Indo-European *bʰluH-yé-ti?

Latin fluō

Proto-Indo-European *-os

Proto-Indo-European *-s

Proto-Indo-European *-ōs

Proto-Italic *-ōs

Latin -or

Latin fluorbor.

Czech fluor

Borrowed from Latin fluor.

Pronunciation

• IPA^(key): [ˈfluor]
• Hyphenation: fluor

Noun

fluor m inan

1. fluorine

Declension

Declension of fluor (hard masculine inanimate)

	singular	plural
nominative	fluor	fluory
genitive	fluoru	fluorů
dative	fluoru	fluorům
accusative	fluor	fluory
vocative	fluore	fluory
locative	fluoru	fluorech
instrumental	fluorem	fluory

Further reading

• “fluor”, in Příruční slovník jazyka českého (in Czech), 1935–1957
• “fluor”, in Slovník spisovného jazyka českého (in Czech), 1960–1971, 1989
• “fluor”, in Internetová jazyková příručka (in Czech), 2008–2026

Danish

Chemical element (edit)
F Atomic number 9 fluor
Classification data Period 2 Group 17 Block p-block Class halogen
Previous: ← ilt, oxygen (O)
Next: neon (Ne) →

Etymology

From Medieval Latin fluor, from Latin fluere (“to flow”).

Pronunciation

• IPA^(key): /fluːər/, [ˈfluːɐ]

Noun

fluor n or c (singular definite fluoret or fluoren, not used in plural form)

1. fluorine (symbol F)

Declension

Declension of fluor

common gender	singular
	indefinite	definite
nominative	fluor	fluoren fluoret
genitive	fluors	fluorens fluorets

Related terms

• fluorescens
• fluorescere
• fluorid

Further reading

• fluor on the Danish Wikipedia.Wikipedia ^da
• “fluor” in Den Danske Ordbog

Dutch

Chemical element (edit)
F Atomic number 9 fluor
Classification data Period 2 Group 17 Block p-block Class halogen
Previous: ← zuurstof (O)
Next: neon (Ne) →

Etymology

Borrowed from Latin fluor.

Pronunciation

• IPA^(key): /ˈfly.ɔr/, [ˈflyɥɔr]

• Audio:

  (file)

• Hyphenation: flu‧or

Noun

fluor n (uncountable, no diminutive)

1. the chemical element fluorine (symbol: F)

Derived terms

• fluoresceren
• fluoride

Further reading

• “fluor” in Woordenlijst Nederlandse Taal – Officiële Spelling, Nederlandse Taalunie. [the official spelling word list for the Dutch language]

Estonian

Chemical element (edit)
F Atomic number 9 fluor
Classification data Period 2 Group 17 Block p-block Class halogen
Previous: ← hapnik (O)
Next: neoon (Ne) →

Noun

fluor (genitive fluori, partitive fluori)

1. fluorine

Declension

Declension of fluor (ÕS type 22e/riik, length gradation)
		singular	plural
nominative		fluor	fluorid
accusative	nom.
	gen.	fluori
genitive			fluoride
partitive		fluori	fluore fluorisid
illative		fluori fluorisse	fluoridesse fluoresse
inessive		fluoris	fluorides fluores
elative		fluorist	fluoridest fluorest
allative		fluorile	fluoridele fluorele
adessive		fluoril	fluoridel fluorel
ablative		fluorilt	fluoridelt fluorelt
translative		fluoriks	fluorideks fluoreks
terminative		fluorini	fluorideni
essive		fluorina	fluoridena
abessive		fluorita	fluorideta
comitative		fluoriga	fluoridega

Further reading

• “fluor”, in [EKSS] Eesti keele seletav sõnaraamat [Descriptive Dictionary of the Estonian Language] (in Estonian) (online version), Tallinn: Eesti Keele Sihtasutus (Estonian Language Foundation), 2009
• “fluor”, in [ÕS] Eesti õigekeelsussõnaraamat ÕS 2018 [Estonian Spelling Dictionary] (in Estonian) (online version), Tallinn: Eesti Keele Sihtasutus (Estonian Language Foundation), 2018, →ISBN
• fluor in Sõnaveeb (Eesti Keele Instituut)

French

Chemical element (edit)
F Atomic number 9 fluor
Classification data Period 2 Group 17 Block p-block Class halogen
Previous: ← oxygène (O)
Next: néon (Ne) →

Etymology

From Latin fluor.

Pronunciation

• IPA^(key): /fly.ɔʁ/

• Audio:

  (file)

• Audio (France (Vosges)):

  (file)

• Audio (France (Lyon)):

  (file)

Noun

fluor m (uncountable)

1. fluorine (chemical element)

Synonyms

• phthore (obsolete)

Derived terms

• fluorescent

Further reading

• “fluor”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012

Hungarian

Chemical element (edit)
F Atomic number 9 fluor
Classification data Period 2 Group 17 Block p-block Class halogen
Previous: ← oxigén (O)
Next: neon (Ne) →

Pronunciation

• IPA^(key): [ˈfluor]
• Hyphenation: flu‧or
• Rhymes: -or

Noun

fluor (usually uncountable, plural fluorok)

1. fluorine (chemical element)

Declension

Inflection (stem in -o-, back harmony)

	singular	plural
nominative	fluor	fluorok
accusative	fluort	fluorokat
dative	fluornak	fluoroknak
instrumental	fluorral	fluorokkal
causal-final	fluorért	fluorokért
translative	fluorrá	fluorokká
terminative	fluorig	fluorokig
essive-formal	fluorként	fluorokként
essive-modal	—	—
inessive	fluorban	fluorokban
superessive	fluoron	fluorokon
adessive	fluornál	fluoroknál
illative	fluorba	fluorokba
sublative	fluorra	fluorokra
allative	fluorhoz	fluorokhoz
elative	fluorból	fluorokból
delative	fluorról	fluorokról
ablative	fluortól	fluoroktól
non-attributive possessive – singular	fluoré	fluoroké
non-attributive possessive – plural	fluoréi	fluorokéi

Possessive forms of fluor

possessor	single possession	multiple possessions
1st person sing.	fluorom	fluoraim
2nd person sing.	fluorod	fluoraid
3rd person sing.	fluora	fluorai
1st person plural	fluorunk	fluoraink
2nd person plural	fluorotok	fluoraitok
3rd person plural	fluoruk	fluoraik

Derived terms

• fluorid

Further reading

• fluor in Géza Bárczi, László Országh, et al., editors, A magyar nyelv értelmező szótára [The Explanatory Dictionary of the Hungarian Language] (ÉrtSz.), Budapest: Akadémiai Kiadó, 1959–1962. Fifth ed., 1992: →ISBN.

Ido

Verb

fluor

1. future infinitive of fluar

Indonesian

Noun

fluor (plural fluor-fluor)

1. fluor

Interlingua

Noun

fluor (uncountable)

1. fluorine

Kashubian

Chemical element (edit)
F Atomic number 9 fluor
Classification data Period 2 Group 17 Block p-block Class halogen
Previous: —
Next: kali (K) →

Etymology

Borrowed from German Fluor.

Pronunciation

• IPA^(key): /ˈflu.ɔr/
• Rhymes: -uɔr
• Syllabification: flu‧or

Noun

fluor m inan

1. fluorine

Further reading

• Eùgeniusz Gòłąbk (2011), “fluor”, in Słownik Polsko-Kaszubski / Słowôrz Pòlskò-Kaszëbsczi‎^[1]

Latin

Etymology

From fluō (“to flow”) +‎ -or, from Proto-Indo-European *bʰlew- (“to swell, flow”).

Pronunciation

• (Classical Latin) IPA^(key): [ˈfɫu.ɔr]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈfluː.or]

Noun

fluor m (genitive fluōris); third declension

1. flow (act of flowing)

Declension

Third-declension noun.

	singular	plural
nominative	fluor	fluōrēs
genitive	fluōris	fluōrum
dative	fluōrī	fluōribus
accusative	fluōrem	fluōrēs
ablative	fluōre	fluōribus
vocative	fluor	fluōrēs

Related terms

• fluo

References

• “fluor”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press

Norwegian Bokmål

Noun

fluor m or n (definite singular fluoren or fluoret)

1. fluorine (chemical element, symbol F)

Norwegian Nynorsk

Noun

fluor m or n (definite singular fluoren or fluoret, uncountable)

1. fluorine (as above)

Occitan

Etymology

From Latin fluor.

Noun

fluor m (uncountable)

1. fluorine

Old High German

Etymology

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium. Particularly: “not cognate with floor, it seems?”)

Noun

fluor m

1. seed
2. seed field

Declension

Declension of fluor (masculine a-stem)

case	singular	plural
nominative	fluor	fluorā, fluora
accusative	fluor	fluorā, fluora
genitive	fluores	fluoro
dative	fluore	fluorum
instrumental	fluoru	—

References

• Köbler, Gerhard (2014), “fluor”, in Althochdeutsches Wörterbuch‎^[2] (in German), 6th edition

Polish

Chemical element (edit)
F Atomic number 9 fluor
Classification data Period 2 Group 17 Block p-block Class halogen
Previous: ← tlen, kwasoród (obsolete) (O)
Next: neon (Ne) →

Etymology

Internationalism; compare English fluorine, French fluor, German Fluor, ultimately from Latin fluor.

Pronunciation

• IPA^(key): /ˈflu.ɔr/

• Audio 1:

  (file)

• Audio 2:

  (file)

• Rhymes: -uɔr
• Syllabification: flu‧or

Noun

fluor m inan

1. fluorine

Declension

Declension of fluor

	singular
nominative	fluor
genitive	fluoru
dative	fluorowi
accusative	fluor
instrumental	fluorem
locative	fluorze
vocative	fluorze

Further reading

• “fluor”, in Wielki słownik języka polskiego‎^[3] (in Polish), Instytut Języka Polskiego PAN
• “fluor”, in Polish dictionaries at PWN‎^[4] (in Polish)

Romanian

Chemical element (edit)
F Atomic number 9 fluor
Classification data Period 2 Group 17 Block p-block Class halogen
Previous: ← oxigen (O)
Next: neon (Ne) →

Etymology

Etymology tree

Proto-Indo-European *bʰel-der.

Proto-Indo-European *bʰlewH-der.

Proto-Indo-European *bʰluH-yé-ti?

Latin fluō

Proto-Indo-European *-os

Proto-Indo-European *-s

Proto-Indo-European *-ōs

Proto-Italic *-ōs

Latin -or

Latin fluorder.

French fluorbor.

Romanian fluor

Borrowed from French fluor, from Latin fluor.

Pronunciation

• IPA^(key): /fluˈor/, /flor/
• Hyphenation: flu‧or

Noun

fluor n (uncountable)

1. fluorine (chemical element)

Declension

singular only	indefinite	definite
nominative-accusative	fluor	fluorul
genitive-dative	fluor	fluorului
vocative	fluorule

Derived terms

• fluoriza
• fluorizare

References

• “fluor”, in DEX online—Dicționare ale limbii române (Dictionaries of the Romanian language) (in Romanian), 2004–2026

Serbo-Croatian

Chemical element (edit)
F Atomic number 9 fluor / флуор
Classification data Period 2 Group 17 Block p-block Class halogen
Previous: ← kisik / кисик, kiseonik / кисеоник (O)
Next: neon / неон (Ne) →

Etymology

From Latin fluorum.

Pronunciation

• IPA^(key): /flǔo̞ːr/
• Hyphenation: flu‧or

Noun

flȕōr m inan (Cyrillic spelling флу̏о̄р)

1. fluorine

Declension

Declension of fluor

	singular	plural
nominative	flȕōr	flȕōri
genitive	flȕōra	fluórā
dative	flȕōru	fluórima
accusative	flȕōr	flȕōre
vocative	flȕōre	flȕōri
locative	fluóru	fluórima
instrumental	flȕōrom	fluórima

References

• “fluor”, in Hrvatski jezični portal [Croatian language portal] (in Serbo-Croatian), 2006–2026

Slovene

Chemical element (edit)
F Atomic number 9 fluor
Classification data Period 2 Group 17 Block p-block Class halogen
Previous: ← kisik (O)
Next: neon (Ne) →

Etymology

From Latin fluor.

Pronunciation

• IPA^(key): /flúːɔr/

Noun

flȗor m inan

1. fluorine

Declension

The diacritics used in this section of the entry are non-tonal. If you are a native tonal speaker, please help by adding the tonal marks.

Masculine inan., hard o-stem
nominative	flúor
genitive	flúora
	singular
nominative (imenovȃlnik)	flúor
genitive (rodȋlnik)	flúora
dative (dajȃlnik)	flúoru
accusative (tožȋlnik)	flúor
locative (mẹ̑stnik)	flúoru
instrumental (orọ̑dnik)	flúorom

The diacritics used in this section of the entry are non-tonal. If you are a native tonal speaker, please help by adding the tonal marks.

Masculine inan., soft o-stem
nominative	flúor
genitive	flúorja
	singular
nominative (imenovȃlnik)	flúor
genitive (rodȋlnik)	flúorja
dative (dajȃlnik)	flúorju
accusative (tožȋlnik)	flúor
locative (mẹ̑stnik)	flúorju
instrumental (orọ̑dnik)	flúorjem

Further reading

• “fluor”, in Slovarji Inštituta za slovenski jezik Frana Ramovša ZRC SAZU (in Slovene), 2014–2026

Swedish

Chemical element (edit)
F Atomic number 9 fluor
Classification data Period 2 Group 17 Block p-block Class halogen
Previous: ← syre (O)
Next: neon (Ne) →

Etymology

From Latin fluor.

Pronunciation

• IPA^(key): /ˈfloːr/

• Audio:

  (file)

• Homophone: flår

Noun

fluor n or c

1. fluorine

Declension

Declension of fluor

		nominative	genitive
singular	indefinite	fluor	fluors
	definite	fluoret	fluorets
plural	indefinite	—	—
	definite	—	—

Declension of fluor

		nominative	genitive
singular	indefinite	fluor	fluors
	definite	fluoren	fluorens
plural	indefinite	—	—
	definite	—	—

Declension of fluor

		nominative	genitive
singular	indefinite	fluor	fluors
	definite	fluorn	fluorns
plural	indefinite	—	—
	definite	—	—

Related terms

• fluorsköljning
• fluortant

References

• “fluor”, in Svensk ordbok [Dictionary of Swedish] (in Swedish)

• “fluor”, in Svenska Akademiens ordbok [Dictionary of the Swedish Academy] (in Swedish)
• Svensk MeSH