Opacity may refer to:

  • Opacity (optics), the degree to which light is not allowed to travel through
  • Opaque context, a term to describe the linguistic context of co-referential terms
  • Phonological opacity, a term in phonology
  • Opaque travel inventory, the market of selling unsold travel inventory at a discounted price

Computer science

  • How much an image will obscure the background when painted, usually defined by its alpha channel
  • The use of an opaque data type, a data type that is incompletely described in a module interface
  • Said of data that can only be interpreted and by an external entity, such as a magic cookie
  • Opaque binary blob, a term used in network engineering and computer science

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Look at other dictionaries:

  • opacity — UK US /əʊˈpeɪsəti/ US  /əʊˈpæsəti/ noun [U] ► the quality of being difficult to understand or know about, especially because things have been intentionally kept secret or made complicated : »He believes the opacity of traditional property… …   Financial and business terms

  • Opacity — O*pac i*ty, n. [L. opacitas: cf. F. opacit[ e].] 1. The state of being opaque; the quality of a body which renders it impervious to the rays of light; want of transparency; opaqueness. [1913 Webster] 2. Obscurity; want of clearness. Bp. Hall.… …   The Collaborative International Dictionary of English

  • opacity — I noun asininity, blockishness, confusion, darkness, denseness, density, dimness, doltishness, dull wittedness, dullness, fatuity, hebetude, impenetrability, imperceptibility, inapprehensibility, incomprehensibility, indiscernibility,… …   Law dictionary

  • opacity — (n.) 1550s, darkness of meaning, obscurity, from Fr. opacité, from L. opacitatem (nom. opacitas) shade, shadiness, from opacus shaded, dark, opaque (see OPAQUE (Cf. opaque)). The literal sense condition of being impervious to light first recorded …   Etymology dictionary

  • opacity — ► NOUN ▪ the condition of being opaque …   English terms dictionary

  • opacity — [ō pas′ə tē] n. [Fr opacité < L opacitas < opacus, shady] 1. the state, quality, or degree of being opaque 2. pl. opacities something opaque, as a spot on the cornea or lens of an eye …   English World dictionary

  • Opacity — (Roget s Thesaurus) < N PARAG:Opacity >N GRP: N 1 Sgm: N 1 opacity opacity Sgm: N 1 opaqueness opaqueness &c. >Adj. film Sgm: N 1 cloud cloud &c. 353 PARAG:Opacity >V GRP: V 1 Sgm: V 1 be opaque …   English dictionary for students

  • opacity — [[t]oʊpæ̱sɪti[/t]] 1) N UNCOUNT Opacity is the quality of being difficult to see through. [FORMAL] Opacity of the eye lens can be induced by deficiency of certain vitamins... He insisted that the mineral content of the water determined the… …   English dictionary

  • opacity — noun /oʊˈpæsɪti/ a) 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. b) The state or quality of being inaccessible to understanding The opacity of these… …   Wiktionary

  • opacity —    The quality of being opaque. In painting, the power of a pigment to cover or obscure the surface to which it is applied. When opacity is not complete, it can be described as translucence, or as opaque from 99% down to 1%. The equivalent of 0%… …   Glossary of Art Terms

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