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gamma.

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

5 characters2 syllables approx.English language

Meaning & usage

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

    countable · uncountable
  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.

    countable · uncountable
  3. A gamma ray or gamma-ray photon.

    countable · uncountable
  4. The Gamma function, symbolized by Γ.

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

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

    countable · uncountable
  7. A non-SI unit of measure of mass, equal to 1 microgramme.

    countable · uncountable
  8. Slope of log-log plot of video input and luminance output.

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

    countable · uncountable
  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.

    countable · uncountable
  11. Synonym of gamma correction.

    countable · uncountable
Where this word comes from

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

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.