noun · 2 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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UK:/diːkəʊˈhɪəɹəns/
1
noun
Meaning 1
Loss of quantum coherence (phase relation between the quantum states of particles) in a physical system as it interacts with its environment.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Qualifier: quantum mechanics
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
The normal condition of sensitiveness in a coherer; reversion to such condition.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
History
Etymology
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.
Across languages
Translations
7 source translations are retained for this English entry.
Chinese Mandarin:
退相干
(tuìxiānggān)
— loss of quantum coherence
Finnish:
dekoherenssi
— loss of quantum coherence
French:
décohérence
— loss of quantum coherence
Georgian:
დეკოჰერენცია
(deḳoherencia)
— loss of quantum coherence
German:
Dekohärenz
— loss of quantum coherence
Polish:
dekoherencja
— loss of quantum coherence
Serbo-Croatian:
dekoherencija
— loss of quantum coherence