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Pronunciation: o-pas'i-te


  1. A lack of transparency; an opaque or nontransparent area.
  2. On a radiograph, a more transparent area is interpreted as an opacity to x-rays in the body.
  3. Mental dullness.

[L. opacitas, shadiness]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.