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Definitions of stratum
  1. noun
    people having the same social, economic, or educational status
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  2. noun
    an abstract place usually conceived as having depth

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  3. noun
    a subpopulation divided into a stratified sampling
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  4. noun
    one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock)
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Definition that contains stratum
  • bed a stratum of ore or coal thick enough to be mined with profit
  • bed (geology) a stratum of rock (especially sedimentary rock)
  • fold a geological process that causes a bend in a stratum of rock
  • horizon a specific layer or stratum of soil or subsoil in a vertical cross section of land
  • folding a geological process that causes a bend in a stratum of rock
  • seam a stratum of ore or coal thick enough to be mined with profit
  • superposition (geology) the principle that in a series of stratified sedimentary rocks the lowest stratum is the oldest
  • superposition (geology) the deposition of one geological stratum on another
  • underclass belonging to the lowest and least privileged social stratum
  • substrate any stratum or layer lying underneath another
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