1530s, "a reduction in rank or dignity," from French dégradation (14c., Old French degradacion), noun of action from past-participle stem of degrader (see degrade). From 1752 as "state of being reduced from a higher to a lower grade or power;" by 1769 as "reduction of strength, value, magnitude, etc." Related: Degradational.
degeneration
degenerationist
degenerative
deglutition
degradable
degradation
degrade
degrease
degree
degression
degustation