Dark Pools: Large trades by financial institutions that are offered away from public exchanges so that trades are anonymous. Benefits of a dark pool include: anonymous trading with minimal market impact, price improvement and opacity, lower transaction costs, less information “leakage” and access to as much liquidity as possible through technology. Some traders that use an investment strategy based on liquidity feel that dark pools should be publicized in order to ensure trading is “fair” for all parties involved.

Source: Wikipedia, PriceWaterhouseCoopers, Investopedia

Decouple: A situation in financial markets where the return on two asset classes deviate from their expected or normal patterns of correlation. Decoupling occurs when two different asset classes that usually rise and fall in unison begin to move in opposite directions, such as one increasing in value and the other decreasing in value.

Source: Investopedia, Wikipedia

Deposit Facility: Within the Eurosystem, a system for overnight deposits at a national central bank. Deposits of this type are repaid at a pre-specified interest rate. With the new rates announced by the ECB, banks will pay the ECB 10 basis points to hold their money.

Source: European Central Bank Online Glossary

Display Advertising: Any print advertisement other than a classified advertisement. Specifically, in the context of this article, advertisements appearing on web pages in many forms, including web banners. 

Source: BusinessDictionary.com

Durable Goods Orders: Durable goods are products consumers purchase that last longer than a one-time use. Durable goods orders are economic indicators released by the Bureau of Census that reflects new orders placed with domestic manufacturers for delivery of factory hard goods in the future. Orders placed in current months may provide work in factories for many months to come as they work to fill the orders.

Source: Investopedia