- The fainter of the two overlapping images in ghosting. Also called ghost image.
- On a computer screen, to display the letters or the icon representing a function, operation, or option in a lighter, grayed, or fuzzy manner, to indicate that it is unavailable. For example, the cut function should be grayed out when no content is selected.
- A non-existing person which is created so as to have unauthorized access to confidential and/or valuable information, with the objective of thwarting detection.
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