# fluorine

> English word · Noun · IPA /ˈflʊ(ə)ɹˌin · frequency rank #41,631

## Definitions
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. A single atom of this element.

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

## Easily confused with
- **flooring** (https://plainspell.com/en/vs/flooring-vs-fluorine)
- **fluoride** (https://plainspell.com/en/vs/fluoride-vs-fluorine)

## Common misspellings (11)
`ffluorine`, `flluorine`, `flourine`, `fluoirne`, `fluorien`, `fluorinne`, `fluornie`, `fluorrine`, `fluroine`, `fulorine`, `lfuorine`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/fluorine