duration dur-RAY-shun Your browser does not support the audio element. [ English ] Definition The length of time that a note is sounded. This term can also refer to the notation of the length of time that a note is to be sounded or the length of time that a rest should be observed (silence). Share Share on Facebook (opens in a new tab) Share on X (opens in a new tab) Last Updated: 2016-05-24 00:37:45