- the state or quality of being opaque.
- something opaque.
- the degree to which a substance is opaque; capacity for being opaque.
- Photography. the proportion of the light that is absorbed by the emulsion on any given area of a film or plate.
- obscurity of meaning.
- mental dullness.
- Medicine/Medical. an opaque spot or area in normally clear or transparent tissue, as a cataract of the eye.
Origin of opacity
Examples from the Web for opacities
Historical Examples of opacities
Who knows whether these opacities will not become transparent?Les Misrables
These may be treated with nitrate of silver lotion of twice the strength used for opacities.Special Report on Diseases of the Horse
United States Department of Agriculture
This accounts for the films, opacities, and white spots seen upon the eye after the inflammation has subsided.
- the state or quality of being opaque
- the degree to which something is opaque
- an opaque object or substance
- obscurity of meaning; unintelligibility
- physics photog the ratio of the intensity of light incident on a medium, such as a photographic film, to that transmitted through the medium
- logic philosophy the property of being an opaque context
Word Origin and History for opacities
1550s, "darkness of meaning, obscurity," from French opacité, from Latin opacitatem (nominative opacitas) "shade, shadiness," from opacus "shaded, dark, opaque" (see opaque). The literal sense "condition of being impervious to light" first recorded 1630s.
- The quality or state of being opaque.
- An opaque or nontransparent area, as of the cornea.