English
adstratal
From ad- + stratal.
Proto-Indo-European *h₂éd ‘near, at’
Proto-Italic *ad ‘toward, to, on, up to, for’
Latin ad ‘to, towards’
English ad-
Today it means
adj Relating to an adstratum.
Language periods are conventional ranges, not dates for this word.
Etymograph / adstratal