D
Darwin

The open-source component of Mac OS X.

database

A software program for storing, retrieving, and manipulating multiple pieces of information.

default

A setting that is chosen if a user does not specify another. For example, the default home page for some Web browsers is the developing company's site.

defragment

To reorganize a file so that it occupies contiguous clusters on a disk.

Desktop

The main area of the Mac OS; the part that contains icons for drives, files, folders, and in Mac OS 9 and earlier, the Trash.

dialog box

An alert that asks for user input.

disc and disk

When you're talking about CD or DVD or other optical media, it is a disc. When referring to magnetic media such as those used in hard drives or Zip drives, it's a disk. ...

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