1) Amortization 2) Decrease 3) Diminution 4) Reduction 5) Step-down 1) Amortization 
Amortisation is the equivalent of depreciation for intangible assets....more on Amortisation
• (n.) Alt. of Amortisement
An accountancy term for the gradual reduction in value of an asset caused by the passage of time. If something is amortised, it is written off. If the cause is not solely related to time, the effect is described as depreciation
The settlement of a debt through the periodic repayment of principal and interest payments.
The writing off of the cost of goodwill or other intangible assets over a period of time.
The depreciations in the value of assets, which a company owns. For example, if the company has a fleet of cars worth £1 million, they may set aside £300,000 per year to allow for depreciation in their value.
An annual charge made in a company's profit and loss account to reduce the value of an intangible... <a target=_blank href='http://www.finance-glossary.com/terms/amortisation.htm?id=52&ginPtrCode=00000&PopupMode=false' title='Read full definition of amortisation'>more</a>
amortization, amortisation 1. The reduction of a debt by making payments with regular transfers or installments, or the money used for this. 2. Payment of an obligation in a series of installments or transfers. 3. The reduction of the value of an asset by prorating its cost over a period of years.