tungstous

The story

1. Proto-Indo-European*ten-
2. Proto-Indo-European*téngʰ-u-s ~ *tn̥gʰ-éw-s
3. Proto-Germanic*þunguz
4. Old Norseþungr
5. Swedishtung
6. Proto-Indo-European*steh₂-
7. Proto-Indo-European*steyh₂-
8. Proto-Indo-European*stóyh₂nos
9. Proto-Germanic*stainaz
10. Proto-Norseᛊᛏᚨᛁᚾᚨᛉ (stainaʀ)
11. Old Norsesteinn
12. Old Swedishsten
13. Swedishsten
14. Swedishtungsten
15. Englishtungsten
16. English todaytungstous

From tungsten + -ous.