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coarse-graining (plural coarse-grainings)

  1. (sciences) The rescaling of a phenomenon into units or cells of size close to the uncertainty of measurement.
    • 2005, James B. Hartle, “What Connects Different Interpretations of Quantum Mechanics?”, in Quo Vadis Quantum Mechanics?[1], ISBN 3540221883, page 75:
      As human observers we focus almost entirely on coarse-grainings of this quasiclassical realm. However, quantum theory does not distinguish the classical realm from other decoherent sets...

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