covering, spread


  • strata

    Strata are Earth's layers of rock or regions of the atmosphere; they can also be the different social, cultural, and economic levels of a society.

  • prostration

    an abrupt failure of function or complete physical exhaustion

  • stratification

    the act or process or arranging persons into classes or social strata

  • stratify

    divide society into social classes or castes

  • stratosphere

    the atmospheric layer between the troposphere and the mesosphere

  • stratospheric

    of the highest region on a graded scale

  • substrate

    the substance that is acted upon by an enzyme or ferment

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