disk
noun [ C ]
IT ( UK also disc) uk/dɪsk/ us (also magnetic disk)
a flat circular piece of metal or plastic used for storing information on a computer:
a computer/back-up disk The data has been automatically stored on a back-up disk.
This information can be accessed online as well as on disk.
disk space/storage Its more advanced features include disk compression to save disk space.
transfer/copy/save sth to (a) disk
mainly US disc
See also
compact disc
floppy disk
hard disk