to decay
de
di
cay
ˈkeɪ
kei
delaydecrydecoy

Definition & Meaning of "decay"in English

to decay
01

to be gradually damaged or destroyed as a result of natural processes 

Intransitive
Grammatical Information
Composition
Simple
State verb
Regular
Present tense
decay
3rd person singular
decays
Present participle
decaying
Past simple
decayed
Past participle
decayed
Examples
Wood can decay if left untreated and exposed to moisture. 
1.1

(of a structure or an area) to become worse gradually 

Intransitive
to decay definition and meaning
Examples
The old house began to decay after years of neglect. 
02

to cause gradual destruction or damage of something 

Transitive: to decay sth
Examples
Neglecting proper dental hygiene can decay tooth enamel, leading to cavities and eventual tooth loss. 
03

(of a radioactive substance) undergoe fission or emits radiation, resulting in the transformation of its atomic nucleus into a different element or isotope 

Intransitive: to decay into an element or isotope
Examples
Uranium-238 decays into thorium-234 through a process of alpha decay. 
Decay
01

a gradual decrease in stored charge, current, or signal strength 

Grammatical Information
Animacy status
Abstract
Composition
Simple
Uncountable
Examples
The capacitor showed slow decay of its charge. 
02

the gradual process of decline, deterioration, or loss of quality, and the resulting inferior state 

Examples
The moral decay of society concerned the philosopher. 
03

the decomposition or rotting of organic matter 

Examples
The fruit was soft and showed signs of decay. 
04

the spontaneous disintegration of a radioactive substance, emitting ionizing radiation 

Examples
Uranium undergoes radioactive decay over millions of years. 
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