The story
- Proto-Italic*knuks
- Latinnux
- Latinnucleu
- Englishnucleus
- Englishnucleo-
- Proto-Indo-European*gʷʰiH-(s-)lo-
- Proto-Italic*fī(s)lom
- Latinfīlum
- Late Latinfīlō
- Medieval Latinfīlāmentum
- Englishfilament
- English todaynucleofilament
Etymology from Wiktionary, CC BY-SA 4.0.