1 [mass noun] a system for converting visual images (with sound) into electrical signals, transmitting them by radio or other means, and displaying them electronically on a screen:the days before television [as modifier]:a television camera
the activity, profession, or medium of broadcasting on television:she has a job in television [as modifier]:television news
television programmes:Dan was sitting on the settee watching televisionNorman was on television yesterday
2 (also television set) a device with a screen for receiving television signals:a colour televisionshe turned the television up
Origin:
early 20th century: from tele- 'at a distance' + vision
television in other Oxford dictionaries
Definition of television in the US English dictionary