The story
- Proto-Indo-European*h₁én
- Proto-Indo-European*h₁n̥tér
- Proto-Italic*n̥ter
- Latininter
- Latininter-
- Englishinter-
- Proto-Indo-European*gʷʰiH-(s-)lo-
- Proto-Italic*fī(s)lom
- Latinfīlum
- Late Latinfīlō
- Medieval Latinfīlāmentum
- Englishfilament
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Englishfilamental
- English todayinterfilamental
From inter- + filamental.
Etymology from Wiktionary, CC BY-SA 4.0.