1. the process of declining from a higher to a lower level of effective power or vitality or essential quality

Similar word(s): devolution

Definition categories: process

2. the state of being degenerate in mental or moral qualities

Similar word(s): decadence, decadency, degeneracy

Definition categories: state, abasement, abjection, degradation

3. passing from a more complex to a simpler biological form

Similar word(s): retrogression

Definition categories: event, shift, transformation, transmutation

Sentences with degeneration as a noun:

- fatty degeneration of the liver