| Word | Description |
| decibel | (dB) A unit of measurement of sound that compares the relative intensity of different sound sources. |
| Desktop | Just like a physical top of a desk, the Windows desktop is where you put the things you?re working on or want to access quickly. The desktop is the main screen in Windows where you can put icons that act as shortcuts to various programs. |
| Domain | On the Internet, a portion of the naming hierarchy tree that refers to general groupings of networks based on organization type or geography. In this district, our domain is HISD. When you log on to a computer, the third field shows you what domain you are logging onto. |
| DV | (Digital Video) With a capital "D" and a capital "V," DV is a specific video format; both a tape format (like Hi8) and a data format specification. |