1. (

• amplification ,
• elaboration ,

) addition of extra material or illustration or clarifying detail; "a few remarks added in amplification and defense"; "an elaboration of the sketch followed" ;

2. (

• amplification ,
• gain ,

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

3. (

• amplification ,

) (electronics) the act of increasing voltage or power or current ;