English
superstratum
From super- + stratum.
A compound of super- + stratum
Proto-Indo-European *sterh₃- ‘to spread’
Proto-Indo-European *str̥néh₃ti ‘to strew’
Proto-Italic *stornō
Latin sternō ‘spread’
Latin strātum ‘a spread for a bed, coverlet, quilt, blanket’
English stratum
Today it means
noun A stratum that is on top of another
Language periods are conventional ranges, not dates for this word.
Etymograph / superstratum