definition of
amplification

[1] #1 amplification n. [elaboration] addition of extra material or illustration or clarifying detail; "a few remarks added in amplification and defense"; "an elaboration of the sketch followed". wn

[2] #2 amplification n. [gain] the amount of increase in signal power or voltage or current expressed as the ratio of output to input. wn

[3] #3 amplification n. (electronics) the act of increasing voltage or power or current. wn