Opacity or opaque may refer to:
- Impediments to (especially, visible) light:
- Opacities, absorption coefficients
- Opacity (optics), property or degree of blocking the transmission of light
- Metaphors derived from literal optics:
- In linguistics:
- Opaque context, a term to describe the linguistic context of co-referential terms
- Phonological opacity, a term in phonology
- Semantic opacity, the opposite of semantic transparency
- Opaque travel inventory, the market of selling unsold travel inventory at a discounted price
- In linguistics:
- Musical works:
- Computer science:
- Measure of obscuration of background by "painting"[clarification needed] an image, e.g. alpha channel
- Use of an opaque data type
- Property attributed to data that can be interpreted only by using an external entity, e.g. magic cookie technology
- Opaque binary blob, in network-engineering and computer-science technology, a large set of binary data (a blob) that looks like garbage to those unacquainted with its internal structure.
This disambiguation page lists articles associated with the title Opacity.
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