480p

Definition:

The "480" part of 480p describes the number of vertical lines that make up a television or video signal. Most television or video signals are rated at 480, 720 or 1080. The more vertical lines that make up the picture, the crisper or higher definition the picture. The "p" following 480 indicates that the video display is constructed using a progressive scan method.

Many standard definition DVDs are published in a 480p format.

Here's a word you may not know...

download

Usually used in reference to the Internet, to download something from the Internet means to transfer it from the Internet to your computer. If you install a piece of software from an Internet site, you are downloading the software to your computer.