gamma

noun ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about gamma at Wordnik → Where our words come from →

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.