| Word | Description |
| A/V (Audio/Video) | A common shorthand for multimedia audio and video. |
| analog | An electrical signal is referred to as either analog or digital. Analog signals are those signals directly generated from a stimulus such as a light striking a camera picture tube. You can convert an analog signal to a digital signal by using an analog to digital converter. |
| artifacts | Unwanted visual distortions that appear in a video image, such as cross-color artifacts, cross-luminance artifacts, jitter, blocking, ghosts, etc. |
| aspect ratio | Proportional width and height of on-screen picture. Current standard for a conventional monitor is 4:3 (four-by-three); 16:9 for HDTV. |