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English definition of “decay”

decay

noun [U]     /dɪˈkeɪ/
C2 the process of decaying: environmental/industrial/moral/urban decay dental/tooth decay The buildings had started to fall into decay. This industry has been in decay for some time.Decaying and staying fresh
(Definition of decay noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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