- the act or process of decreasing; gradual reduction.
- the amount lost by reduction.
- a negative increment.
- the ratio of amplitudes of a damped harmonic motion in the course of two successive oscillations.
- the act of decreasing; diminution
- a negative increment
- a measure of the damping of an oscillator, expressed by the ratio of the amplitude of a cycle to its amplitude after one period
- (of spectra) a sequence of related spectrum lines decaying in intensity, e.g. Balmer decay
