/ ˈkɒnsənəns; NAmE ˈkɑːn-/ noun
1.
[ U ] consonance (with sth) ( formal ) agreement :
a policy that is popular because of its consonance with traditional party doctrine
2.
[ U , C ] ( music ) a combination of musical notes that sound pleasing together
OPP dissonance
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WORD ORIGIN
late Middle English : from Old French , or from Latin consonantia , from consonant- sounding together, from the verb consonare , from con- with + sonare to sound.