Short for "cumulative audience", it's the total number of listeners a radio station has over the course of an average week. Total amount of
time spent listening does not matter...if you listen to station A for fifteen minutes one
day and station B three hours every
day, you're still cumed to both stations.
If you regularly listen to three
radio stations over the course of a
week, then you cume three stations, and
thos three stations would consider you part of their cume.