fluorine

/ˈflʊ(ə)ɹˌin

//ˈflʊ(ə)ɹˌin/ noun

By · According to Wiktionary data (CC BY-SA) ·

"fluorine" is a 8-letter English headword indexed on PlainSpell.

The verdict

“fluorine” has 11 generated spelling variants in the English index at frequency #41,631. The variants make it a useful spelling check.

#41,631
frequency rank, English
18,613
“F” headwords
11
tracked misspellings
2
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The chemical element (symbol F) with an atomic number of 9. It is the lightest of the halogens, a pale yellow-green, highly reactive gas that attacks all metals.

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

fluorine vs flooring
75% similar
fluorine vs fluoride
88% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for fluorine
PropertyValue
Headwordfluorine
LanguageEnglish
Part of speechNoun
IPA/ˈflʊ(ə)ɹˌin
Letters8
Frequency rank#41,631
Misspellings tracked11
Confusable pairs2
SourceWiktionary (kaikki.org)

Where “fluorine” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). fluorine lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 11 spelling variants around fluorine (IPA /ˈflʊ(ə)ɹˌin), anoun. Corpus frequency is #41,631 among 18,613 “F” headwords. Wiktionary lists 2 senses, so context still picks the gloss.

Our generated misspelling index lists 11 likely wrong-spelling variants for fluorine, with forms such as "ffluorine", "flluorine", and "flourine". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 2 confusable-pair relationships, "flooring", "fluoride", where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From Latin fluor (“flow”) + -ine. Coined by British chemist Humphry Davy in 1813. The correct English form is fluorine, spelled F-L-U-O-R-I-N-E.

Definition

  1. 1
    The chemical element (symbol F) with an atomic number of 9. It is the lightest of the halogens, a pale yellow-green, highly reactive gas that attacks all metals.
  2. 2
    A single atom of this element.

Etymology

From Latin fluor (“flow”) + -ine. Coined by British chemist Humphry Davy in 1813.

Synonyms

phthor

This word in other languages

flúor(Español)fluor(Français)Fluor(Deutsch)flúor(Português)

Common misspellings

Also misspelled as:

  • ffluorine
  • flluorine
  • flourine
  • fluoirne
  • fluorien
  • fluorinne
  • fluornie
  • fluorrine
  • fluroine
  • fulorine
  • lfuorine

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of fluorine - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

ffluorine1flluorine1flourine2fluoirne2fluorien2fluorinne1fluornie2fluorrine1
Edit distance from "fluorine"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "fluorine"?
"fluorine" is spelled F-L-U-O-R-I-N-E. The IPA pronunciation is /ˈflʊ(ə)ɹˌin.
What does "fluorine" mean?
As a noun, "fluorine" means: The chemical element (symbol F) with an atomic number of 9. It is the lightest of the halogens, a pale yellow-green, highly reactive gas that attacks all metals.
What words are commonly confused with "fluorine"?
"fluorine" is commonly confused with "flooring", "fluoride". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "fluorine"?
The IPA (International Phonetic Alphabet) transcription for "fluorine" is /ˈflʊ(ə)ɹˌin. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "fluorine"?
From Latin fluor (“flow”) + -ine. Coined by British chemist Humphry Davy in 1813. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “fluorine”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is F-L-U-O-R-I-N-E - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈflʊ(ə)ɹˌin (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “flooring” - see the side-by-side comparison. fluorine vs flooring
  • Browse more English words and confusable pairs in the same reference. English words

Same frequency band

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list