English

interstratify

From inter- + stratify.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Proto-Indo-European *sterh₃- ‘to spread’

…

Latin sternō ‘spread’

Latin stratum

French strate ‘stratum’

French stratifier ‘to stratify’

Today it means

verb To put or insert between other strata.

Language periods are conventional ranges, not dates for this word.

Etymograph / interstratify