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

opacity

noun
 
/əʊˈpæsəti/
 
/əʊˈpæsəti/
[uncountable]
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  1. (specialist) the fact of being difficult to see through; the fact of being opaque
    • sheets of frosted glass with varying degrees of opacity
  2. (formal) the fact of being difficult to understand; the fact of being opaque opposite transparency (1)
    • the opacity of the poet’s language
    3. Word Originmid 16th cent.: from French opacité, from Latin opacitas, from opacus ‘darkened’.
See opacity in the Oxford Advanced American Dictionary
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Nearby words

halfway
adverb
 
 
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