adjective Gui·do·ni·an \gwēˈdōnēən\

Definition of Guidonian

  1. :  of or relating to the theories of medieval music theorist Guido d'Arezzo; especially :  relating to his system of solfège and theory of movable hexachords

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Origin and Etymology of guidonian

Guido d'Arezzo (also called Fra Guittone) †about 1050 Benedictine monk and musical reformer + English -ian

First Known Use: 1721

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