A sustaining program is a radio or television program that, despite airing on a commercial broadcast station, does not have commercial sponsorship or advertising. This term, mostly used in the United States, was common in the early days of radio, but has become unfamiliar, due to the nearly universal use of commercial advertising on radio and tele...
[n] - a program without a commercial sponsor
noun a program without a commercial sponsor
a radio or television program without a commercial sponsor.