# flux

> English word · Noun · IPA /flʌks/ · frequency rank #13,518

## Definitions
1. The act of flowing; a continuous moving on or passing by, as of a flowing stream.
2. A state of ongoing change.
3. A chemical agent for cleaning metal prior to soldering or welding.
4. The rate of transfer of energy (or another physical quantity), especially an electric or magnetic field, through a given surface.
5. A disease which causes diarrhea, especially dysentery.
6. Diarrhea or other fluid discharge from the body.
7. The state of being liquid through heat; fusion.

## Etymology
From Old French flux, from Latin fluxus (“flow”).

## Easily confused with
- **fu** (https://plainspell.com/en/vs/flux-vs-fu)
- **fun** (https://plainspell.com/en/vs/flux-vs-fun)
- **fly** (https://plainspell.com/en/vs/flux-vs-fly)
- **fox** (https://plainspell.com/en/vs/flux-vs-fox)
- **fur** (https://plainspell.com/en/vs/flux-vs-fur)
- **fut** (https://plainspell.com/en/vs/flux-vs-fut)
- **fou** (https://plainspell.com/en/vs/flux-vs-fou)
- **four** (https://plainspell.com/en/vs/flux-vs-four)
- **foul** (https://plainspell.com/en/vs/flux-vs-foul)
- **Foxx** (https://plainspell.com/en/vs/flux-vs-foxx)
- **FL** (https://plainspell.com/en/vs/fl-vs-flux)
- **fix** (https://plainspell.com/en/vs/fix-vs-flux)
- **flu** (https://plainspell.com/en/vs/flu-vs-flux)
- **fax** (https://plainspell.com/en/vs/fax-vs-flux)
- **FLA** (https://plainspell.com/en/vs/fla-vs-flux)
- **Flo** (https://plainspell.com/en/vs/flo-vs-flux)
- **feu** (https://plainspell.com/en/vs/feu-vs-flux)
- **flat** (https://plainspell.com/en/vs/flat-vs-flux)
- **flow** (https://plainspell.com/en/vs/flow-vs-flux)
- **flag** (https://plainspell.com/en/vs/flag-vs-flux)

## Common misspellings (6)
`fflux`, `fllux`, `fluxx`, `flxu`, `fulx`, `lfux`

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