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decoherence.

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

11 characters4 syllables approx.English language

Meaning & usage

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

    countable · uncountable
  2. The normal condition of sensitiveness in a coherer; reversion to such condition.

    countable · dated · uncountable
Where this word comes from

First attested 1902 (OED) in the electrical engineering sense "the resetting of a coherer." From decohere (also 1902) + -ence, representing the verbal noun (compare decohesion, decoherency). The quantum mechanics concept was introduced in 1970 by German physicist H. Dieter Zeh, writing in the journal Foundations of Physics.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.