Learn how to say Synchronization correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word synchronization:
the act of causing things to occur or recur at the same time or in unison
the act of causing (watches, etc) to indicate the same time
(computing) the act of downloading files, esp music or video files, from a PC to a portable device such as an iPod, or uploading files from the device to a PC
(cinema) the process of establishing the picture and soundtrack records in their correct relative position