-on

-on · suffix¹

1. Ancient Greekἤλεκτρον (ḗlektron)
2. Latinēlectrum
3. New Latinēlectricus
4. Englishelectric
5. Proto-Indo-European*h₁ey-
6. Proto-Indo-European*h₁éyti
7. Proto-Hellenic*éimi
8. Ancient Greekἰόν (ión)
9. Englishion
10. Englishelectronbf.
11. English today-on

Back-formation from electron, influenced by Ancient Greek -ον (-on).

-on · suffix²

Back-formation from carbon, first applied to boron and then to silicon.

-on · suffix³

From the combining form of -one, as in sulfon-ic. Compare also -thion.