ghost image
From Wiktionary, the free dictionary
Etymology 1
From ghost (noun sense 3, via noun sense 4).
Noun
ghost image (plural ghost images)
- (photography) Any undesired image appearing at the image plane of an optical system; either a false image of the desired object, or an out-of-focus image of a bright source of light in the field of the optical system.
Translations
undesired image
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Etymology 2
After the Norton Ghost disk-cloning and backup software tool, itself an initialism of general hardware-oriented system transfer.
Noun
ghost image (plural ghost images)
- (computing) A copy of all the contents of a hard drive, used as a backup.
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