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opacity

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noun opac·i·ty \ō-ˈpa-sə-tē\

Simple Definition of opacity

  • : 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

Full Definition of opacity

plural opac·i·ties

  1. 1 a :  obscurity of sense :  unintelligibleness b :  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 (as the lens of the eye)

Examples of opacity

  1. the opacity of the glass

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



Origin of opacity

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


First Known Use: 1560


Medical Dictionary

opacity

play
noun opac·i·ty \ō-ˈpas-ət-ē\

Medical Definition of opacity

plural opac·i·ties

  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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