What does D stand for?

Debit

A debit is an entry on the left side of a ledger account which eventually increases the amount of assets or expenses or decreases the liabilities, revenue or the net worth.

Double

To alter course round a point of land

Delta

Triangular area of sediment in mouth of a river, so giving river more than one discharging channel

Diamonds

Diode

A two-terminal device that rectifies signals (passes current in only one direction). Most commonly, a semiconductor consisting of a P-N junction, but dioides can also be realized using vacuum tube, point-contact, metal-semiconductor junction (Schottky), and other technologies. A semiconductor device that only allows current to pass through it in one direction, cathode to anode.Also, a classification of semiconductor devices having only one junction.

Diploid

Diploid cells have two homologous copies of each chromosome, usually one from the mother and one from the father. Nearly all mammals are diploid organisms (the tetraploid (four sets) plains viscacha rats (Tympanoctomys barrerae) and golden vizcacha rat (Pipanacoctomys aureus) are the only known exceptions as of 2004), although all individuals have some small fraction of cells that display polyploidy.

Director

A person appointed to oversee and run a company or organisation along with other directors, In the entertainment industry, the person who directs the making of a film, TV program, etc.

Directive

Distal

The more (or most) distant of two (or more) things. For example, the distal end of the femur is the end down by the knee; the end more distant from the torso. The distal bile duct is the far end of the cystic duct, the end away from the gallbladder. And the distal lymph node in a chain of nodes is the most distant one. The opposite of distal is proximal. For a more complete listing of terms used in medicine for spatial orientation, please see the entry to "Anatomic Orientation Terms".