The story
- Ancient Greek · derived fromδίοδος“passage through”
- English todaydiode
From di- (“two”) + -ode. Learned formation, coined by William Henry Eccles in 1919, after Ancient Greek δίοδος (díodos, “passage through”), which however is formed not with δι- (di-, “two”) but with δια- (dia-, “through”).
Etymology from Wiktionary, CC BY-SA 4.0.