Meaning & Definition of word "Decay"

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    Decay

    /dɪˈkeɪ/

    noun:

    • 1. The process of decomposing or rotting.
      • Example: The decay of organic matter enriches the soil.
    • 2. A decline in quality, quantity, or strength.
      • Example: The decay of the old building was evident as the walls crumbled.
    • 3. The gradual reduction in the number of radioactive atoms in a sample.
      • Example: Radioactive decay is measured in half-lives.

    verb:

    • 1. To decompose or rot.
      • Example: The leaves will decay over the winter months.
    • 2. To decline in quality, quantity, or strength.
      • Example: The town began to decay after the factory closed.

    Etymology

    Middle English: from Old French decaïr, from de- ‘down’ + cair ‘to fall’.

    Common Phrases and Expressions

    to decay away:

    to gradually diminish or disappear.

    natural decay:

    the process by which organic matter breaks down naturally.

    cultural decay:

    the decline of cultural norms or standards in a society.

    Related Words

    decomposition:

    The process of breaking down organic matter.

    decline:

    A gradual and continuous loss of strength, value, or quality.

    deterioration:

    The process of becoming progressively worse.

    Slang Meanings of decay

    Meaning: To fall apart or go badly.

    Example Sentence: That project is decaying fast.

    Meaning: To be in a state of ruin or neglect.

    Example Sentence: The old mall is just decaying now, nobody goes there.