isorhythm EYE-soe-rih-thum Your browser does not support the audio element. [ English ] Definition A Medieval principal of construction which was used most often in motets. This construction is based on a repeating rhythmic pattern in one or more of the voices. Share Share on Facebook (opens in a new tab) Share on X (opens in a new tab) Last Updated: 2016-05-20 15:43:25