The story
- Proto-Indo-European*sed-
- Proto-Indo-European*sedéh₁yeti
- Proto-Italic*sedēō
- Latinsedeō
- Latinsedimentum
- Middle Frenchsédiment
- English todaysediment
From Middle French sédiment, from Latin sedimentum < sedeō.
Etymology from Wiktionary, CC BY-SA 4.0.