compress
verb [ T ]
uk/kəmˈpres/ us IT
to make computer information take up less space in memory or on a disk, by using a special program:
Mega sites such as YouTube compress data to accommodate huge numbers of videos.
Compare
decompress
See also
zip
compression
noun [ U ] /kəmˈpreʃən/
Video formats like VCD and DVD both use MPEG data compression to store the picture and sound information.