filament

The story

1. Proto-Indo-European*gʷʰiH-(s-)lo-
2. Proto-Italic*fī(s)lom
3. Latinfīlum
4. Late Latinfīlō
5. Medieval Latinfīlāmentum
6. English todayfilament

Borrowed from Medieval Latin fīlāmentum, from Late Latin fīlō (“to spin, draw out in a long line”), from Latin fīlum (“thread”).

Words from the same roots