Hologram

3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  hologram \hol"o*gram\, n.
     A photographic image giving the observer a seemingly
     three-dimensional view of the represented object. The
     three-dimensional effect is produced by exposing a
     photographic recording medium to an interference pattern
     generated by a coherent beam of light (as from a laser)


     reflected from the subject, interacting with a beam directly
     from the source. The full three-dimensional effect requires
     illumination of the image with coherent light, but less
     perfect three-dimensional visual effects may also be observed
     when the hologram is illuminated with white light.
     [PJC]

From WordNet (r) 2.0 [wn]:

  hologram
       n : the intermediate photograph (or photographic record) that
           contains information for reproducing a three-dimensional
           image by holography [syn: {holograph}]

From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:

  22 Moby Thesaurus words for "hologram":
     Photostat, Xerox, Xerox copy, blowup, blueprint, contact printing,
     cyanotype, enlargement, glossy, lantern slide, matte, microcopy,
     microprint, photocopy, photogravure, photostatic copy, positive,
     print, projection printing, semi-matte, slide, transparency