stratum

Borrowed from Latin strātum (“a spread for a bed, coverlet, quilt, blanket; a pillow, bolster; a bed”), neuter singular of strātus, perfect passive participle of sternō (“spread”).

• IPA^(key): /ˈstɹɑːtəm/
• IPA^(key): /ˈstɹeɪtəm/

stratum (plural stratums or strata)

1. One of several parallel horizontal layers of material arranged one on top of another.

   Synonym: tier

   • 1884, Alfred Ronald Conkling, Appleton's Guide to Mexico, page 43:

     It is built of alternate strata of brick and clay, and the sides correspond to the direction of the meridians and parallels.

2. (geology) A layer of sedimentary rock having approximately the same composition throughout.

   Synonyms: bed, layer

   Coordinate term: seam

3. Any of the regions of the atmosphere, such as the stratosphere, that occur as layers.
4. (biology) A layer of tissue.
5. A class of society composed of people with similar social, cultural, or economic status.
6. (ecology) A layer of vegetation, usually of similar height.
7. (computing) The level of accuracy of a computer's clock, relative to others on the network.
   • 2006, Roderick W. Smith, Linux Samba Server Administration:

     Computers that synchronize themselves to the stratum 1 time servers are known as stratum 2 time servers if they allow others to synchronize to them, and so on.

• stratification
• stratify
• stratosphere

• stratum on Wikipedia.Wikipedia
• stratum in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• stratum in The Century Dictionary, New York, N.Y.: The Century Co., 1911.

From strātus, perfect passive participle of sternō (“spread”).

• (Classical) IPA^(key): /ˈstraː.tum/, [ˈstraː.tũː]

strātum n (genitive strātī); second declension

1. a bed-covering, coverlet, quilt, blanket
2. a pillow, bolster
3. a bed, couch
4. a horse-blanket, saddle-cloth
5. a pavement

Second declension.

strātum

1. supine of sternō

• stratum in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• stratum in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• stratum in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
• stratum in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français, Hachette
• Carl Meissner; Henry William Auden (1894) Latin Phrase-Book‎, London: Macmillan and Co.
  • (ambiguous) a street, a made road: via strata
    
  • (ambiguous) to prostrate oneself before a person: ad pedes alicuius iacēre, stratum esse (stratum iacēre)
    
  • (ambiguous) all have perished by the sword: omnia strata sunt ferro