The story
- Medieval Greek · learned borrowing fromγαμμάδιον
- English todaygammadion
Learned borrowing from Medieval Greek γαμμάδιον (gammádion), diminutive of γάμμα (gámma), after the resemblance of each of the symbol’s arms to the Greek letter gamma: Γ.
Etymology from Wiktionary, CC BY-SA 4.0.