DMF - Computer Definition
(1) (DivX Media Format) A DivX format for encoding movies that uses the DivX codec. See DivX.
(2) (Distribution Media Format) A floppy disk format from Microsoft that was used to distribute its software. DMF floppies compressed more data (1.7MB) onto the 3.5" diskette, and the files could not be copied with normal DOS and Windows commands. A DMF utility had to be used.