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Related to just intonation: equal temperament
A tuning system having intervals that are acoustically pure.
[just, harmonically pure.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Music, other) a form of tuning employing the pitch intervals of the untempered natural scale, sometimes employed in the playing of the violin, cello, etc
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014