The first definition of television in the dictionary is the system or process of producing on a distant screen a series of transient visible images, usually with an accompanying sound signal. Electrical signals, converted from optical images by a camera tube, are transmitted by UHF or VHF radio waves or by cable and reconverted into optical images by means of a television tube inside a television set. Other definition of television is Also called: television set. a device designed to receive and convert incoming electrical signals into a series of visible images on a screen together with accompanying sound. Television is also the content, etc, of television programmes.