gluonium

The story

1. Proto-Indo-European*gleyH-
2. Proto-Indo-European*glóh₁ytn̥
3. Proto-Italic*gloiten
4. Latinglūten
5. Late Latinglūs
6. Old Frenchgl
7. Middle Englishglew
8. Englishglue
9. Ancient Greekἤλεκτρον (ḗlektron)
10. Latinēlectrum
11. New Latinēlectricus
12. Englishelectric
13. Proto-Indo-European*h₁ey-
14. Proto-Indo-European*h₁éyti
15. Proto-Hellenic*éimi
16. Ancient Greekἰόν (ión)
17. Englishion
18. Englishelectronbf.
19. Englishgluon
20. Englishonium
21. English todaygluonium

From gluon + -onium.