aspect ratio
Definition:
The aspect ratio of an image or other object is simply its width divided by its height. Traditional standard definition pictures have a 4:3 aspect ratio, where 4 represents the width and 3 represents the height. High definition pictures have a 16:9 aspect ratio.
Here's a word you may not know...
MP3
MP3 stands for Moving Picture Experts Group (MPEG)-1 Audio Layer 3. An MP3 is a type of digital audio that is typically used for storing music on the computer. MP3 files are popular because a full length song requires about 1/10 of the space of a normal song, yet the quality of the music relatively the same.
