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1. Dictionary

   stratum

   /ˈstrɑːtəm/

   noun

   • 1. a layer or a series of layers of rock in the ground: "a stratum of flint" Similar layerveinseamlodebedstratificationthicknesssheetlamina
   • ▪ a thin layer within any structure: "thin strata of air"
   • 2. a level or class to which people are assigned according to their social status, education, or income: "members of other social strata" Similar levelclassechelonrankgradestationgradationgroupsetbracketcastearchaic:estatesphere
   • ▪ a group into which members of a population are divided in stratified sampling: "allocation of sample units to strata"

   Word Origin late 16th century (in the sense ‘layer or coat of a substance’): modern Latin, from Latin, literally ‘something spread or laid down’, neuter past participle of sternere ‘strew’.

   Scrabble Points: 9

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2. en.wikipedia.org › wiki › StratumStratum - Wikipedia

   en.wikipedia.org › wiki › Stratum

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   In geology and related fields, a stratum (pl.: strata) is a layer of rock or sediment characterized by certain lithologic properties or attributes that distinguish it from adjacent layers from which it is separated by visible surfaces known as either bedding surfaces or bedding planes. [1]

3. www.vedantu.com › geography › stratumStratum - Definition, Formation, Features, Laws and Uses

   www.vedantu.com › geography › stratum

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   Formed from the igneous rocks on the earth’s surface, sedimentary rocks, from the volcanic lava flows and its fragments deposits. The layers vary greatly in shape and thickness ranging from several millimetres to metres. The strata can be a lenslike thick body that only extends a few metres.

4. dictionary.cambridge.org › english › stratumSTRATUM | definition in the Cambridge English Dictionary

   dictionary.cambridge.org › english › stratum

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   STRATUM meaning: 1. one of the parts or layers into which something is separated: 2. a layer of rock, soil, or…. Learn more.

5. dictionary.cambridge.org › dictionary › englishSTRATUM | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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   one of the parts or layers into which something is separated: The report shows that drugs have penetrated every stratum of American society. geology specialized. a layer of rock, soil, or similar material: The cliffs are characterized by remarkable zigzagging strata of shale and sandstone. SMART Vocabulary: related words and phrases.

6. www.merriam-webster.com › dictionary › stratumStratum Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › stratum

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   1. : a bed or layer artificially made. 2. a. : a sheetlike mass of sedimentary rock or earth of one kind lying between beds of other kinds. b. : a region of the sea or atmosphere that is analogous to a stratum of the earth. c. : a layer of tissue. deep stratum of the skin.

7. geologybase.com › stratumUnderstanding Stratum in Geology, Including Types and ...

   geologybase.com › stratum

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   Feb 21, 2023 · A stratum is a rock layer with a lithology (texture, color, grain size, composition, fossils, etc.) different from the adjacent ones and several form strata. Each stratum is separated by a visible bedding surface or plane.

8. www.britannica.com › science › stratum-geologyStratum | Rock Layers, Stratification & Sedimentary Rocks ...

   www.britannica.com › science › stratum-geology

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   stratum, sedimentary rock layer bounded by two stratification planes, the latter being produced by visible changes in the grain size, texture, or other diagnostic features of the rocks above and below the plane.