teletext A system for one-way broadcast transmission of information, primarily in text form but with primitive graphics capability, using spare television channel capacity and adapted domestic TV receivers. On a channel offering teletext, a number of “pages” of information (up to about 100) are transmitted in a continuous cycle, concurrently with the normal TV signal and leaving it unaffected while the receiver is used for normal viewing. Having selected teletext mode on the control pad, it is then possible to select any page number; when the selected page next arrives in the transmission cycle, it is stored in local memory in the set and displayed indefinitely (until the user selects another page or exits from teletext mode). Compare videotex.

tel·e·text / ˈteləˌtekst/ • n. a news and information service in the form of text and graphics, transmitted using the spare capacity of existing television channels to televisions with appropriate receivers.

teletext System for transmitting text so that it can be displayed on television receivers. Television companies transmit the text in coded form along with the sound and vision signals. Sets are equipped to receive teletext separately and decode the text signals so that they can be displayed on the screen.