Definition of QuickTime:
Multimedia software developed and disturbed by Apple, Inc. Files created using QuickTime combined video, sound, and animation into one file. Most multimedia programs developed by Apple, including iTunes, use the QuickTime program to replay files. QuickTime is used by a number of websites to playback animations and sounds. Users that do not have a QuickTime player installed on their computers will not be able to view multimedia files formatted using a QuickTime player. Apple offers both a free and paid version of the program.
Meaning of QuickTime & QuickTime Definition