byte

Definition:

A way to measure how much information can be stored on a device. One byte is enough space to store one letter of a word. For instance, five bytes would be needed to store the word "hello".

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

CD

CD stands for Compact Disc and is a popular medium for music. Music on a CD is stored digitally. Playing a CD requires a CD player or other device, such as a computer, with a CD drive.

Certain types of writeable CDs can be used by computers to store data.