( n. )
A gradual deterioration, from natural causes, of any class of animals or plants or any particular organ or organs; hereditary degradation of type.
( n. )
A gradual deterioration, from natural causes, of any class of animals or plants or any particular organ or organs; hereditary degradation of type.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012