#decay.decrease__decline  a gradual decrease; as of stored charge or current
  supertype:  decrease__decrement  a process of becoming smaller
  subtype:  exponential_decay__exponentialdecay__exponential_return__exponentialreturn  a decrease that follows an exponential function
     subtype:  relaxation_behavior__relaxation  the exponential return of a system to equilibrium after a disturbance

No statement uses or specializes decay.decrease; click here to add one.