[From Late Latin 'holographus', from Greek 'holographos', from 'holos' meaning whole + 'graphos' meaning written]
n.
1. A document written wholly in the handwriting of the person whose signature it bears.
2. A negative produced by exposing a high-resolution photographic plate, without camera or lens, near a subject illuminated by monochromatic, coherent radiation, as from a laser: when it is placed in a beam of coherent light a true three-dimensional image of the subject is formed.
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