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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...

Internet Explorer

Internet Explorer is a web browser designed by Microsoft that allows you to view web pages on the Internet. Internet Explorer often comes pre-installed on computers running Microsoft Windows, which is why it's considered the most widely used Internet browser.