| 单词 | opacity |
| 释义 | opacity /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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