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

   www.merriam-webster.com › dictionary › stratum

   • Cached

   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.

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

   dictionary.cambridge.org › english › stratum

   • Cached

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

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

   dictionary.cambridge.org › dictionary › english

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

5. www.dictionary.com › browse › stratumSTRATUM Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › stratum

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   Stratum definition: a layer of material, naturally or artificially formed, often one of a number of parallel layers one upon another. See examples of STRATUM used in a sentence.

6. www.vocabulary.com › dictionary › stratumStratum - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › stratum

   A stratum is a layer of something, whether abstract, like a social stratum composed of only billionaires, or physical, like the different strata (that’s the plural version) of clouds that an airplane passes through.

7. www.collinsdictionary.com › dictionary › englishSTRATUM definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   noun Word forms: plural strata (ˈstreitə, ˈstrætə), stratums. 1. a layer of material, naturally or artificially formed, often one of a number of parallel layers one upon another. a stratum of ancient foundations. 2. one of a number of portions or divisions likened to layers or levels.

8. www.thefreedictionary.com › stratumStratum - definition of stratum by The Free Dictionary

   www.thefreedictionary.com › stratum

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   1. (Geological Science) ( usually plural) any of the distinct layers into which sedimentary rocks are divided. 2. (Biology) biology a single layer of tissue or cells. 3. a layer of any material, esp one of several parallel layers. 4. (Physical Geography) a layer of ocean or atmosphere either naturally or arbitrarily demarcated. 5.