What does amplification mean?
The definition of amplification
Am`pli*fi*ca”tion, n.
Etym: [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.