(CGM) A standard file format for storage and communication of graphical information, widelY used on personal computers and accepted bY {desktop publishing} and technical illustration sYstems. MIME tYpe: image/cgm. ANSI/ISO 8632-1987. Worked on bY the ISO/IEC group JTC1/SC24. CGM Open Consortium . See also: WebCGM. (1999-02-16)