English
stratum
Stratum comes from Latin strātum ‘a spread for a bed, coverlet, quilt, blanket’, from Proto-Indo-European *str̥néh₃ti ‘to strew’, and ultimately from *sterh₃- ‘to spread’.
- Proto-Indo-Europeanc. 4500–2500 BCE*sterh₃-‘to spread’reconstructed
- Proto-Indo-European, derivedc. 4500–2500 BCE*str̥néh₃ti‘to strew’reconstructed
- Proto-Italicc. 1500–700 BCE*stornōreconstructed
- Latinc. 75 BCE–200 CEsternō‘spread’next step skipped: Latin strātus
- Latin, derivedc. 75 BCE–200 CEstrātum‘a spread for a bed, coverlet, quilt, blanket’
- Englishearliest quotation 1884stratum
attested reconstructed ? uncertain or disputed
Lineage
- Proto-Indo-Europeanc. 4500–2500 BCE*sterh₃-‘to spread’reconstructed
- Proto-Indo-European, derivedc. 4500–2500 BCE*str̥néh₃ti‘to strew’reconstructed
- Proto-Italicc. 1500–700 BCE*stornōreconstructed
- Latinc. 75 BCE–200 CEsternō‘spread’next step skipped: Latin strātus
- Latin, derivedc. 75 BCE–200 CEstrātum‘a spread for a bed, coverlet, quilt, blanket’
- Englishearliest quotation 1884stratum
Earliest quotation: 1884, Alfred Ronald Conkling, Appleton's Guide to Mexico: “It is built of alternate strata of brick and…”
Linked words
through Proto-Indo-European *sterh₃- ‘to spread’
street, straw, strand, sternum, stroma, 11 more
through Latin sternō ‘spread’
Today it means
noun One of several parallel horizontal layers of material arranged one on top of another.
Language periods are conventional ranges, not dates for this word.
Etymograph / Proto-Indo-European *sterh₃- / stratum