opacity

Meanings

1. 1
   noun

   The state or quality of being opaque, not allowing light to pass through.

   We could not see the sandbar due to the opacity of the muddy water.

2. 2
   noun

   The state or quality of being inaccessible to understanding.

   The opacity of these decisions is troubling.

3. 3
   noun

   A measure of relative impenetrability to electromagnetic radiation such as light.

   The opacity of a clean glass window is near zero.

4. 4
   noun

   An opaque area.

   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.

5. 5
   noun

   the quality of being opaque to a degree

6. 6
   noun

   incomprehensibility resulting from obscurity of meaning

7. 7
   noun

   the phenomenon of not permitting the passage of electromagnetic radiation

Etymology

From opaque + -ity, from French opacité, from Latin opacitas.