FAX Views 6 meanings found FAX is widely recognized as the abbreviation for facsimile transmission, both in everyday office use and in computing where it denotes the standard Group 3 fax data format, with occasional niche meanings. Governmental Facsimile FAcsimile Transmission Academic & Science Facsimile Automatic Xerox Computing Far Away Xerox Fax (generic Group 3 1bit encoded data) (most Fax programs) Facsimile Automated Xerox