n. [ Cf. F. dégénération. ] 1. The act or state of growing worse, or the state of having become worse; decline; degradation; debasement; degeneracy; deterioration. [ 1913 Webster ]

Our degeneration and apostasy. Bates. [ 1913 Webster ]

2. (Physiol.) That condition of a tissue or an organ in which its vitality has become either diminished or perverted; a substitution of a lower for a higher form of structure; as, fatty degeneration of the liver. [ 1913 Webster ]

3. (Biol.) A gradual deterioration, from natural causes, of any class of animals or plants or any particular organ or organs; hereditary degradation of type. [ 1913 Webster ]

4. The thing degenerated. [ R. ] [ 1913 Webster ]

Cockle, aracus, . . . and other degenerations. Sir T. Browne. [ 1913 Webster ]

Amyloid degeneration,
Caseous degeneration, etc. See under Amyloid, Caseous, etc. [ 1913 Webster ]

n. (Biol.) A believer in the theory of degeneration, or hereditary degradation of type; as, the degenerationists hold that savagery is the result of degeneration from a superior state. [ 1913 Webster ]

(Med.) A form of degeneration occurring in nerve fibers as a result of their division; -- so called from Dr. Waller, who published an account of it in 1850. [ 1913 Webster ]