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

Derived forms: amplifications

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

Encyclopedia: Amplification