Definition of chroma noun from the Oxford Advanced Learner's Dictionary

 

chroma

 noun
noun
BrE BrE//ˈkrəʊmə//
 
; NAmE NAmE//ˈkroʊmə//
 
[uncountable](specialist)
 
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the degree to which a colour is pure or strong, or the fact that it is pure or strong Word Origin late 19th cent.: from Greek khrōma ‘colour’.
See the Oxford Advanced American Dictionary entry: chroma