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

 

absorbance

 noun
noun
BrE BrE//əbˈzɔːbəns//
 
; NAmE NAmE//əbˈzɔːrbəns//
 
; BrE BrE//əbˈsɔːbəns//
 
; NAmE NAmE//əbˈsɔːrbəns//
 
(physics)
 
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the ability of a substance to absorb light
See the Oxford Advanced American Dictionary entry: absorbance