Day trader - Is the term given to speculators who take positions in commodities, which are then, liquidated prior to the close of the same trading day.

Deal date - "Deal date" means the date on which a transaction is agreed upon.

Deal ticket - This is the primary method of recording the basic information relating to a transaction.

Dealer - A "dealer" is an individual or firm acting as a principal, rather than as an agent, in the purchase and/or sale of securities. Dealers trade for their own account and risk.

Deflator - "Deflator" is the word used, meaning the difference between real and nominal Gross National Product, which is equivalent to the overall inflation rate.

Delivery date - This is the date of maturity of the contract, when the exchange of the currencies is made. This date is more commonly known as the value date in the FX or money markets.

Delivery risk - A term, which is used to describe when counterparty will not be able to complete his side of the deal, although willing to do so.

Depreciation - Means a fall in the value of a currency due to market forces rather than due to official action.

Desk - Is a term referring to a group dealing with a specific currency or currencies.

Details - Refers to all the information required to finalize a foreign exchange transaction, i.e. name, rate, dates, and point of delivery.

Devaluation - Is a deliberate downward adjustment of a currency against its fixed parities or bands, normally by formal announcement.

Direct quotation - This is quoting in fixed units of foreign currency against variable amounts of the domestic currency.

Dirty float - A "dirty float" is the floating of a currency when the rate is controlled by intervention by the monetary authorities.