subchannel
nounEtymology From sub- + channel.
1
Broadcasting, Media, Radio A distinct division of a channel or frequency band.
2
Broadcasting, Media, Television An additional frequency owned by a television broadcaster used for less lucrative content.
- […] TV shows you watched when you were younger, you'll likely find them on the subchannels of your local TV stations — which are available free to anyone with a TV set and a good antenna.2020, Michael R. Miller, My TV for Seniors:
- It may well be that our viewers are going to say, "You know what? We don't care as much about 10801. We would rather have you rerun 'CBS News' on a subchannel and show your prime time entertainment in a lesser definition of digital television" […]2001, United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Telecommunications and the Internet, Digital Television: A Private Sector Perspective on the Transition: Hearing..., page 98:
3
Computing, Engineering, Mathematics, Natural sciences, Physical sciences, Sciences A distinct part of an I/O channel associated with a specific device.