English
sedimental
From sediment + -al.
Formed from sediment + -al
Proto-Indo-European *sed- ‘to sit’
…
Proto-Italic *sedēō ‘to sit, to be sitting, to be seated’
Latin sedeō ‘to sit’
Latin sedimentum ‘a settling, sinking down, subsidence’
Middle French sédiment
English sediment
Today it means
adj sedimentary
Language periods are conventional ranges, not dates for this word.
Etymograph / sedimental