noun[mass noun] British • trademark
- A teletext service provided by the BBC: our service brings you constantly updated financial information on CeefaxMore example sentences
- The BBC's pioneering interactive teletext service Ceefax began thirty years ago today.
- As always in these situations, listen out for radio bulletins or check Ceefax and Teletext for updates.
- BBC Online also offered a comprehensive results service, as did Ceefax and Digital Text - via mobile phones.
1970s: representing the pronunciation of the initial syllables of seeing and facsimile.