What does amortization mean?
The definition of amortization
A*mor`ti*za”tion, n.
Etym: [LL. amortisatio, admortizatio. See Amortize, and cf. Admortization.]

1 (Law)
The act or right of alienating lands to a corporation, which was considered formerly as transferring them to dead hands, or in mortmain.
2 The extinction of a debt, usually by means of a sinking fund; also, the money thus paid. Simmonds.