/ (ˌdiːkəʊˈhɪərəns) /
physics the process in which a system's behaviour changes from that which can be explained by quantum mechanics to that which can be explained by classical mechanics
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Examples from the Web for decoherence
The third method of causing the decoherence of the filings is that due to T. Tommasina.
The decoherence is effected by giving the stool a tilt by means of an electromagnet.