# Sigma

> German word · Noun · IPA [ˈzɪɡma] · frequency rank #29,330

## Definitions
1. achtzehnter Buchstabe des griechischen Alphabets

## Easily confused with
- **sim** (https://plainspell.com/de/vs/sigma-vs-sim)
- **Sims** (https://plainspell.com/de/vs/sigma-vs-sims)
- **sign** (https://plainspell.com/de/vs/sigma-vs-sign)
- **Soma** (https://plainspell.com/de/vs/sigma-vs-soma)
- **silva** (https://plainspell.com/de/vs/sigma-vs-silva)
- **summa** (https://plainspell.com/de/vs/sigma-vs-summa)
- **Signal** (https://plainspell.com/de/vs/sigma-vs-signal)
- **Sigmar** (https://plainspell.com/de/vs/sigma-vs-sigmar)
- **Stigma** (https://plainspell.com/de/vs/sigma-vs-stigma)
- **sia** (https://plainspell.com/de/vs/sia-vs-sigma)
- **sig** (https://plainspell.com/de/vs/sig-vs-sigma)
- **saga** (https://plainspell.com/de/vs/saga-vs-sigma)
- **sama** (https://plainspell.com/de/vs/sama-vs-sigma)
- **Siam** (https://plainspell.com/de/vs/siam-vs-sigma)
- **sega** (https://plainspell.com/de/vs/sega-vs-sigma)
- **Siena** (https://plainspell.com/de/vs/siena-vs-sigma)

## Common misspellings (7)
`isgma`, `sgima`, `sigam`, `siggma`, `sigmma`, `simga`, `ssigma`

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