【医】 senile involution
old age
【医】 gerontism; presby-; senectitude; senility; senium
degenerate; retrogress; degeneration; degradation; deterioration; obsolescence
retrogression
【医】 catagenesis; catapiasia; cataplasis; Deg.; degeneracy; degenerate
degeneratio; degeneration; degenerescence; degradation; devolution
disvolution; involute; involution; regress; regression; retrogression
revisionary metamorphosis