opacity

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noun opac·i·ty \ō-ˈpa-sə-tē\

Definition of opacity

plural

opacities

  1. 1a :  obscurity of sense :  unintelligibilityb :  the quality or state of being mentally obtuse :  dullness

  2. 2 :  the quality or state of a body that makes it impervious to the rays of light; broadly :  the relative capacity of matter to obstruct the transmission of radiant energy

  3. 3 :  an opaque spot in a normally transparent structure (such as the lens of the eye)

Examples of opacity in a Sentence

  1. the opacity of the glass

  2. Critics have noted the opacity of her writing style.

Recent Examples of opacity from the Web

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Origin and Etymology of opacity

Middle French opacité shadiness, from Latin opacitat-, opacitas, from opacus shaded, dark


First Known Use: 1575


OPACITY Defined for English Language Learners

opacity

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noun opac·i·ty \ō-ˈpa-sə-tē\

Definition of opacity for English Language Learners

  • : the quality of a material that does not allow light to pass through it : the quality of being opaque

  • : the quality of being difficult to understand or explain


Medical Dictionary

opacity

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noun opac·i·ty \ō-ˈpas-ət-ē\

Medical Definition of opacity

plural

opacities

  1. 1:  the quality or state of a body that makes it impervious to the rays of light; broadly :  the relative capacity of matter to obstruct by absorption or reflection the transmission of radiant energy (as X-rays, infrared radiation, or sound)

  2. 2:  an opaque spot in a normally transparent structure (as the lens of the eye)



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