Definition from Wiktionary, the free dictionary
- (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?, 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...