amplification

英[,æmplɪfɪ'keɪʃən] 美[,æmpləfə'keʃən]

1. addition of extra material or illustration or clarifying detail;

"a few remarks added in amplification and defense"

"an elaboration of the idea followed"

2. the amount of increase in signal power or voltage or current expressed as the ratio of output to input

3. (electronics) the act of increasing voltage or power or current