English

Definition of key signature noun from the Oxford Advanced Learner's Dictionary

 

key signature

 noun
noun
BrE BrE//ˈkiː sɪɡnətʃə(r)//
 
; NAmE NAmE//ˈkiː sɪɡnətʃər//
 
(music) Reading music
 
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the set of marks at the beginning of a printed piece of music to show what key the piece is in See related entries: Reading music
See the Oxford Advanced American Dictionary entry: key signature