Earth's crust

Definitions of Earth's crust
  1. noun
    the outer layer of the Earth
    synonyms: crust
    see moresee less
    types:
    horst
    a ridge of the earth's crust that has been forced upward between two faults and so is higher than the surrounding land
    crustal plate, plate
    a rigid layer of the Earth's crust that is believed to drift slowly
    type of:
    layer
    a relatively thin sheetlike expanse or region lying over or under another
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