- 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 opacity
The cause of this opacity is generally quick boiling while the meat is in.Culture and Cooking
Sometimes the want of opacity is due to the fact that the developer was too cold.
They have not substance enough, in fact, to reach a state of opacity.The Ocean World:
The opacity is remarkably high, explaining why the star is so nearly "heat-tight."Astronomy
The amount of acid regulates the density or opacity of the enamel.
- 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 opacity
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.