Etymology
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holography (n.)

early 19c., of writing, from holograph + -y (4); physics sense, "process of using holograms," is from 1964, coined by discoverer, Hungarian-born physicist Gábor Dénes, from hologram on analogy of telegraphy/telegram.

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Definitions of holography

holography (n.)
the branch of optics that deals with the use of coherent light from a laser in order to make a hologram that can then be used to create a three-dimensional image;
From wordnet.princeton.edu