1. （声波或电流信号的）振幅
In physics, the amplitude of a sound wave or electrical signal is its strength.

2. 广大;广阔;大量
Amplitude is the quality of being large in size or quantity.

1. greatness of magnitude

2. the property of copious abundance

Synonym: bountifulnessbounty

3. (physics) the maximum displacement of a periodic wave