Opacity Meaning
/oʊˈpæsɪti/Definition, CEFR level C1, pronunciation, examples, and quiz.
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Definition
nounThe state or quality of being opaque, not allowing light to pass through.
nounThe state or quality of being inaccessible to understanding.
Sentence Examples
The opacity of the glass made it unsuitable for windowpanes.
Tom adjusted the opacity of the layer.
Synonyms & Antonyms
Synonyms:
None
Antonyms:
CEFR Practice Quiz
The ____ of the old window glass made it impossible to see the garden.
CEFR Practice Quiz (Alternate)
The ____ of the frosted glass allowed light to pass through while maintaining privacy inside.
Word Origin & History
From opaque + -ity, from French opacité, from Latin opacitas.
Literary Quotations & Historical Citations
"This report concerns a child with Down's syndrome (mongolism) and bilateral congenital corneal opacities born into a family affected through three generations by Rieger's anomaly."
— 1968, Dark A. J., Kirkham T. H., “Congenital corneal opacities in a patient with Rieger's anomaly and Down's syndrome”, in British Journal of Ophthalmology, volume 52, number 8, →DOI, page 631:
"Scanty irregular opacities are not uncommonly observed on the chest roentgenogram in the absence of interstitial fibrosis of the lungs."
— 1992, Dick, J. A. et al., “The significance of irregular opacities on the chest roentgenogram”, in Chest, volume 102, number 1, →DOI, →PMID, pages 251-60:
Explore More C1 Vocabulary Words
CEFR Practice Quiz
The ____ of the old window glass made it impossible to see the garden.
CEFR Practice Quiz (Alternate)
The ____ of the frosted glass allowed light to pass through while maintaining privacy inside.