動(dòng)詞 amortize:

1. liquidate gradually
   同義詞：amortise

am.or.tize

v.tr.（及物動(dòng)詞）
am.or.tized,am.or.tiz.ing,am.or.tiz.es
To liquidate (a debt, such as a mortgage) by installment payments or payment into a sinking fund.
分期償還，分期付款：用分期付款和償債基金的形式償清（債務(wù)，如抵押）
To write off an expenditure for (office equipment, for example) by prorating over a certain period.
攤還，攤銷(xiāo)：用在一個(gè)時(shí)期內(nèi)以按比例分配的方式注銷(xiāo)一筆經(jīng)費(fèi)（如辦公設(shè)備）

來(lái)源：
Middle English amortisen [to alienate in mortmain]
中古英語(yǔ) amortisen [讓渡永久營(yíng)業(yè)權(quán)]
from Old French amortir amortiss-
源自 古法語(yǔ) amortir amortiss-
from Vulgar Latin *admortore [to deaden]
源自 俗拉丁語(yǔ) *admortore [使…失去生命]
Latin ad- [ad-]
拉丁語(yǔ) ad- [前綴ad-，表.朝…方向.]
Latin mors mort- [death] * see mer-
拉丁語(yǔ) mors mort- [死] *參見(jiàn) mer-

【引伸】
am.ortiz.able
adj.（形容詞）