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stratum

A stratum means a layer or a section, or a division of the atmosphere or ocean, or a section of society. (noun)

  1. An example of a stratum is the cheese layer of a lasagna.
  2. An example of a stratum is the layer with one soil type in rock sample.
  3. An example of a stratum is the top layer of skin.
  4. An example of a stratum in Earth’s atmosphere is the Thermosphere.
  5. An example of a stratum is the social position of a young person born to a wealthy family.

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See stratum in Webster's New World College Dictionary

See stratum in American Heritage Dictionary 4

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