Am`pli*fi*ca"tion (&?;), n. [L. amplificatio.] 1. The act of amplifying or enlarging in dimensions; enlargement; extension.

2. (Rhet.) The enlarging of a simple statement by particularity of description, the use of epithets, etc., for rhetorical effect; diffuse narrative or description, or a dilating upon all the particulars of a subject.

Exaggeration is a species of amplification.
Brande & C.

I shall summarily, without any amplification at all, show in what manner defects have been supplied.
Sir J. Davies.

3. The matter by which a statement is amplified; as, the subject was presented without amplifications.

• the act, or result of amplifying, enlarging, extending or adding to
  
• (physics) the act, or result of independently increasing some quantity, especially voltage, power or current
  
• (electronics) gain