1. (noun) addition of extra material or illustration or clarifying detail

• elaboration

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

• gain

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

• electricity

1. (noun) addition of extra material or illustration or clarifying detail

• expanding upon
• expansion

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

• increase
• increment

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

• increase
• step-up

1. (noun) the amount of increase in signal power or voltage or current expressed as the ratio of output to input

• loop gain

1. (noun) addition of extra material or illustration or clarifying detail

• dilate
• elaborate
• enlarge
• expand
• expatiate
• exposit
• expound
• flesh out
• lucubrate