# gamma

> English word · Noun · IPA /ˈɡæ.mə/ · frequency rank #11,217

## Definitions
1. The third letter of the Greek alphabet (Γ, γ), preceded by beta (Β, β) and followed by delta, (Δ, δ).
2. The letter Ɣɣ, used in the alphabets of several African languages, and in lowercase form in the IPA to represent a voiced velar fricative.
3. A gamma ray or gamma-ray photon.
4. The Gamma function, symbolized by Γ.
5. A constant approximately equal to 0.57721566, symbolized by γ (also known as the Euler–Mascheroni constant).
6. A non-SI unit of measure of magnetic flux density, equal to 1 nT.
7. A non-SI unit of measure of mass, equal to 1 microgramme.
8. Slope of log-log plot of video input and luminance output.
9. Flight path angle; the angle by which an aircraft's flight path deviates from the horizontal plane.
10. A second-order measure of derivative price sensitivity, expressed as the rate of change in delta with respect to changes in the underlying asset price.
11. Synonym of gamma correction.

## Etymology
Learned borrowing from Ancient Greek γάμμα (gámma). Doublet of gimel.

## Easily confused with
- **gma** (https://plainspell.com/en/vs/gamma-vs-gma)
- **Gaza** (https://plainspell.com/en/vs/gamma-vs-gaza)
- **Gaya** (https://plainspell.com/en/vs/gamma-vs-gaya)
- **gimme** (https://plainspell.com/en/vs/gamma-vs-gimme)
- **gemma** (https://plainspell.com/en/vs/gamma-vs-gemma)
- **gummy** (https://plainspell.com/en/vs/gamma-vs-gummy)
- **ganga** (https://plainspell.com/en/vs/gamma-vs-ganga)
- **gamut** (https://plainspell.com/en/vs/gamma-vs-gamut)
- **garda** (https://plainspell.com/en/vs/gamma-vs-garda)
- **ganja** (https://plainspell.com/en/vs/gamma-vs-ganja)
- **Grammy** (https://plainspell.com/en/vs/gamma-vs-grammy)
- **grammar** (https://plainspell.com/en/vs/gamma-vs-grammar)
- **gam** (https://plainspell.com/en/vs/gam-vs-gamma)
- **game** (https://plainspell.com/en/vs/game-vs-gamma)
- **gala** (https://plainspell.com/en/vs/gala-vs-gamma)
- **gaga** (https://plainspell.com/en/vs/gaga-vs-gamma)
- **Gaia** (https://plainspell.com/en/vs/gaia-vs-gamma)
- **GABA** (https://plainspell.com/en/vs/gaba-vs-gamma)
- **Gama** (https://plainspell.com/en/vs/gama-vs-gamma)
- **games** (https://plainspell.com/en/vs/games-vs-gamma)

## Common misspellings (4)
`agmma`, `gamam`, `ggamma`, `gmama`

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