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(Classical Music) music a canon in which the imitating voice repeats the notes of the theme in reverse order. Also called: retrograde canon or canon cancrizans
[from the mistaken medieval notion that crabs move backwards]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014