Etymology
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hologram (n.)

1949, coined by Hungarian-born British scientist Dennis Gabor (Gábor Dénes), 1971 Nobel prize winner in physics for his work in holography; from Greek holos "whole" (here in sense of "three-dimensional;" from PIE root *sol- "whole, well-kept") + -gram.

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Definitions of hologram

hologram (n.)
the intermediate photograph (or photographic record) that contains information for reproducing a three-dimensional image by holography;
Synonyms: holograph
From wordnet.princeton.edu