Home › Words › T › teletexteletexteletex · noun — A text and document communications service provided over telephone lines, designed as an upgrade to the conventional telex service but rapidly superseded by electronic mail.Definition from Wiktionary (CC BY-SA 3.0).EtymologyFrom tele- + text (but not to be confused with Teletext).nounA text and document communications service provided over telephone lines, designed as an upgrade to the conventional telex service but rapidly superseded by electronic mail.Definitions & examples from Wiktionary (CC BY-SA 3.0).