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cable television - Britannica Concise
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System that distributes television signals by means of coaxial or fibre-optic cables.

Cable television systems originated in the U.S. in the early 1950s to improve reception in remote and hilly areas, where broadcast signals were weak. In the 1960s they were introduced in large metropolitan areas where reception is sometimes degraded by reflection of signals from tall buildings. Since the mid-1970s there has been a proliferation of cable systems that offer special services and which generally charge a monthly fee. Besides providing high-quality signals, some systems can deliver hundreds of channels. Another feature increasingly offered by cable operators is two-way, interactive communication by which viewers can, for example, participate in public-opinion polls as well as connect to the Internet. Cable operators are also involved in the development of video compression, digital transmission, and high-definition television.

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More on "cable television" from Britannica Concise:
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television - Electronic system for transmitting still or moving images and sound to receivers that project a view of the images on a picture tube or screen and recreate the sound.
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More on "cable television" from the 32 Volume Encyclopædia Britannica:
cable television - generally, any system that distributes television signals by means of coaxial or fibre-optic cables. The term also includes systems that distribute signals solely via satellite. Cable-television systems originated in the United States in the early 1950s and were designed to improve reception of commercial network broadcasts in remote and hilly areas. During the 1960s they were introduced in many ...
cable - in electrical and electronic systems, a conductor or group of conductors for transmitting electric power or telecommunication signals from one place to another. Electric communication cables transmit voice messages, computer data, and visual images via electrical signals to telephones, wired radios, computers, teleprinters, facsimile machines, and televisions. There is no clear distinction ...
Black Entertainment Television - American cable television network and multimedia group providing news, entertainment, and other programming developed primarily for African American viewers. BET also operates a jazz network, BET Jazz, features contemporary music through BET Gospel and BET Hip-Hop, produces documentaries and movies for distribution on the BET channel, and sponsors the BET Awards. The company's headquarters are in ...
television - the electronic delivery of moving images and sound from a source to a receiver. By extending the senses of vision and hearing beyond the limits of physical distance, television has had a considerable influence on society. Conceived in the early 20th century as a possible medium for education and interpersonal communication, it became by mid-century a vibrant broadcast medium, using the model of ...
undersea cable - assembly of conductors enclosed by an insulating sheath and laid on the ocean floor for the transmission of messages. Undersea cables for transmitting telegraph signals antedated the invention of the telephone; the first undersea telegraph cable was laid in 1850 between England and France. The Atlantic was spanned in 1858 between Ireland and Newfoundland, but the cable's insulation failed and it ...
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