/oh pas"i tee/, n., pl. opacities.
1. the state or quality of being opaque.
2. something opaque.
3. the degree to which a substance is opaque; capacity for being opaque.
4. Photog. the proportion of the light that is absorbed by the emulsion on any given area of a film or plate.
5. obscurity of meaning.
6. mental dullness.
7. Med. an opaque spot or area in normally clear or transparent tissue, as a cataract of the eye.
[1550-60; < L opacitas shade. See OPAQUE, -ITY]

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Universalium. 2010.


Look at other dictionaries:

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