different between stratum vs understratum

English

Etymology

Borrowed from Latin str?tum (“a spread for a bed, coverlet, quilt, blanket; a pillow, bolster; a bed”), neuter singular of str?tus, perfect passive participle of stern? (“spread”). Doublet of estrade.

Pronunciation

• IPA^(key): /?st???t?m/, /?st?e?t?m/

Noun

stratum (plural stratums or strata)

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

   Synonym: tier
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.

Related terms

• stratification
• stratify
• stratosphere

Translations

Further reading

• 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.

Indonesian

Etymology

From Dutch stratum, from Latin stratum. Doublet of setrat and strata.

Pronunciation

• IPA^(key): [?strat?m]
• Hyphenation: stra?tum

Noun

stratum (first-person possessive stratumku, second-person possessive stratummu, third-person possessive stratumnya)

1. (geology) stratum, a layer of sedimentary rock having approximately the same composition throughout.

Related terms

Further reading

• “stratum” in Kamus Besar Bahasa Indonesia (KBBI) Daring, Jakarta: Badan Pengembangan dan Pembinaan Bahasa, Kementerian Pendidikan dan Kebudayaan Republik Indonesia, 2016.

Latin

Etymology

From str?tus, perfect passive participle of stern? (“spread”).

Pronunciation

• (Classical) IPA^(key): /?stra?.tum/, [?s?(t?)?ä?t????]
• (Ecclesiastical) IPA^(key): /?stra.tum/, [?st????t?um]

Noun

str?tum n (genitive str?t?); 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

Declension

Second-declension noun (neuter).

Descendants

Verb

str?tum

1. accusative supine of stern?

References

• 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?^[1], London: Macmillan and Co.

English

Etymology

under- +? stratum

Noun

understratum (plural understrata)

1. The layer, or stratum, of earth on which the soil rests; the subsoil.