decay, decompose, rot, putrefy, spoil mean to undergo destructive dissolution. decay implies a slow change from a state of soundness or perfection.

The bacteria live on food particles and produce acid that decays the enamel on your teeth. The flesh on a dead body decays very rapidly. It's sad to watch a beautiful rose wither and decay in such a short …

decay, decompose, rot, putrefy, and spoil mean to slowly fall apart and become destroyed by natural processes. decay is the most general of these terms. It often suggests a slow change from a state of …

Decay has wide application but often suggests partial deterioration short of complete destruction: "A decaying dam is an accident waiting to happen" (George Black).

Dec 24, 2025 · decay (third-person singular simple present decays, present participle decaying, simple past and past participle decayed) (intransitive) To deteriorate, to get worse, to lose strength or …

Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A …

There are 13 meanings listed in OED's entry for the noun decay, six of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

To decay means to rot, decompose, break down. Our bodies—anything organic—will decay after death. Broken sidewalks, potholes, graffiti are all signs of urban decay. Tooth decay is something to avoid. …

Decay is also a noun. When not removed, plaque causes tooth decay and gum disease.

Definition of decay noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.