after-image

afterimage

[af-ter-im-ij, ahf-]
noun Psychology.
a visual image or other sense impression that persists after the stimulus that caused it is no longer operative.

Origin:
1875–80; translation of German Nachbild; see after, image

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World English Dictionary
afterimage (ˈɑːftərˌɪmɪdʒ)
 
n
aftersensation, Also called: photogene a sustained or renewed sensation, esp visual, after the original stimulus has ceased

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American Heritage
Medical Dictionary

afterimage af·ter·im·age (āf'tər-ĭm'ĭj)
n.
A visual image that persists after the visual stimulus causing it has ceased to act. Also called photogene.

The American Heritage® Stedman's Medical Dictionary
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