From HomoExcelsior

1. The process of degenerating. 2. The state of being degenerate. 3. Gradual deterioration of specific tissues, cells, or organs with corresponding impairment or loss of function, caused by injury, disease, or aging. 4. The evolutionary decline or loss of a function, characteristic, or structure in an organism or a species. 5. Loss of or gain in power in an amplifier caused by unintentional negative feedback.

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