# fiber

> English word · Noun · IPA /ˈfaɪ.bɚ/ · frequency rank #6,470

## Definitions
1. A single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread.
2. A material in the form of fibers.
3. A material whose length is at least 1000 times its width.
4. Dietary fiber.
5. Moral strength and resolve.
6. The preimage of a given point in the range of a map.
7. The pullback of a morphism along a global element (called the fiber of the morphism over the global element).
8. A kind of lightweight thread of execution.
9. A long tubular cell found in bodily tissue.

## Etymology
From French fibre, from Old French fibre, from Latin fibra.

## Easily confused with
- **fir** (https://plainspell.com/en/vs/fiber-vs-fir)
- **fie** (https://plainspell.com/en/vs/fiber-vs-fie)
- **five** (https://plainspell.com/en/vs/fiber-vs-five)
- **fire** (https://plainspell.com/en/vs/fiber-vs-fire)
- **fine** (https://plainspell.com/en/vs/fiber-vs-fine)
- **file** (https://plainspell.com/en/vs/fiber-vs-file)
- **fife** (https://plainspell.com/en/vs/fiber-vs-fife)
- **FIDE** (https://plainspell.com/en/vs/fiber-vs-fide)
- **fixed** (https://plainspell.com/en/vs/fiber-vs-fixed)
- **fired** (https://plainspell.com/en/vs/fiber-vs-fired)
- **filed** (https://plainspell.com/en/vs/fiber-vs-filed)
- **files** (https://plainspell.com/en/vs/fiber-vs-files)
- **fires** (https://plainspell.com/en/vs/fiber-vs-fires)
- **fines** (https://plainspell.com/en/vs/fiber-vs-fines)
- **fined** (https://plainspell.com/en/vs/fiber-vs-fined)
- **fibre** (https://plainspell.com/en/vs/fiber-vs-fibre)
- **fixes** (https://plainspell.com/en/vs/fiber-vs-fixes)
- **flyer** (https://plainspell.com/en/vs/fiber-vs-flyer)
- **fiery** (https://plainspell.com/en/vs/fiber-vs-fiery)
- **finer** (https://plainspell.com/en/vs/fiber-vs-finer)

## Common misspellings (6)
`fbier`, `ffiber`, `fibber`, `fiberr`, `fiebr`, `ifber`

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