WordWeb Online

1. Addition of extra material or illustration or clarifying detail
   "a few remarks added in amplification and defence"
   - elaboration
    
2. The amount of increase in signal power or voltage or current expressed as the ratio of output to input
   - gain
    
3. (electronics) the act of increasing voltage or power or current

Derived forms: amplifications

Type of: expanding upon, expansion, increase, increment, step-up

Encyclopedia: Amplification