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    Stratum

    /ˈstreɪtəm/

    Meaning & Definition

    noun
    A layer or level, often used in the context of geological or social hierarchies.
    The geologist carefully examined each stratum of rock to understand the formation's history.
    A group or class of people with similar social, economic, or educational characteristics.
    The study focused on the effects of education within different social strata.
    A sheet, layer, or level of material, as in biological sediment or tissue.
    The archaeologists uncovered a stratum rich in artifacts from the ancient civilization.
    In medicine, a layer of tissue or cell covering a surface or a bodily organ.
    The outer stratum of the skin protects the underlying layers from damage.
    In statistical analysis, a subset of a population used for sampling.
    The researchers divided the participants into strata to ensure diverse representation.

    Etymology

    Latin, meaning 'layer' or 'bed'.

    Common Phrases and Expressions

    stratum of society:
    A specific layer or class within a societal hierarchy.
    geological stratum:
    A distinct layer of rock or soil in geology.
    social stratum:
    A level or class in a society.

    Related Words

    stratification
    The arrangement or classification of strata.
    stratify
    To arrange or classify into layers.
    substratum
    An underlying layer or substance.

    Slang Meanings

    Social class
    He's from the upper stratum of society.
    Layer of complexity
    There are multiple strata to his argument.