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gamma

nouncommon in dialogue

  • //ˈɡæ.mə//

The third letter of the Greek alphabet (Γ, γ), preceded by beta (Β, β) and followed by delta, (Δ, δ).

noun

  1. 1

    The third letter of the Greek alphabet (Γ, γ), preceded by beta (Β, β) and followed by delta, (Δ, δ).

  2. 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. 3

    A gamma ray or gamma-ray photon.

  4. 4

    The Gamma function, symbolized by Γ.

  5. 5

    A constant approximately equal to 0.57721566, symbolized by γ (also known as the Euler–Mascheroni constant).

  6. 6

    A non-SI unit of measure of magnetic flux density, equal to 1 nT.

  7. 7

    A non-SI unit of measure of mass, equal to 1 microgramme.

  8. 8

    Slope of log-log plot of video input and luminance output.

  9. 9

    Flight path angle; the angle by which an aircraft's flight path deviates from the horizontal plane.

  10. 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. 11

    Synonym of gamma correction.

Etymology

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

Forms

plural
gammas
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).