channelization

noun

1. (countable, uncountable)The straightening and widening of a stream or river.

   “Section 404 of the Clean Water Act does not regulate activities such as drainage, ditching, and channelization for agricultural production.”

2. (countable, uncountable)The division of a wide-band communications channel into multiple narrow-band channels.

   “1979, Radiofrequency use and management: impacts from the World Administrative Radio Conference of 1979. The specific frequency bands are not consistent with the current design and channelization plans for the DSCS [Defense Satellite Communications System] III.”