fax1 Syllabification: (fax)Pronunciation: /faks/Translate fax | into French | into German | into Italian | into Spanish Definition of fax noun an image of a document made by electronic scanning and transmitted as data by telecommunication links. the production or transmission of faxes:he received the report by fax (also fax machine) a machine for transmitting and receiving faxes. verb [with object] send (a document) by fax. contact (someone) by fax:to obtain a brochure, fax the agent [no object]:the best way to order materials was to faxOrigin: 1940s.: abbreviation of facsimilefax in other Oxford dictionaries Definition of fax in the British & World English dictionary