The story
- Proto-Indo-European*upó
- Ancient Greekῠ̔πό (hŭpó)
- Ancient Greekὑπο- (hupo-)
- Englishhypo-
- Proto-Indo-European*gʷʰiH-(s-)lo-
- Proto-Italic*fī(s)lom
- Latinfīlum
- Late Latinfīlō
- Medieval Latinfīlāmentum
- Englishfilament
- Proto-Indo-European*h₃ed-
- Proto-Indo-European*h₃édosder.?
- Englishfilamentous
- English todayhypofilamentous
From hypo- + filamentous.
Etymology from Wiktionary, CC BY-SA 4.0.