decoherence

noun2

1. •
   Loss of quantum coherence (phase relation between the quantum states of particles) in a physical system as it interacts with its environment.

   • One way of preventing both decoherences is to set up the system in a "non-decoherent quantum state." — 2015
2. •
   (old-fashioned) The normal condition of sensitiveness in a coherer; reversion to such condition.