Source : WordNet®

diskette
     n : a small plastic magnetic disk enclosed in a stiff envelope
         with a radial slit; used to store data or programs for a
         microcomputer; "floppy disks are noted for their
         relatively slow speed and small capacity and low price"
         [syn: {floppy}, {floppy disk}]

Source : Free On-Line Dictionary of Computing

diskette
     
        {floppy disk}