holograph

plural holographs

1. human sciencesA handwritten document that is solely the work of the person whose signature it bears, especially a letter, deed, or will; an original manuscript, a protograph.
2. A hologram.

   Producing a holograph involves illumination of an object through the use of intersecting laser beams.

   1972, Army Research and Development, volumes 13-14, page 10

   2 more examples

   But when a holograph is placed backwards in its holder and illuminated with laser light, it can produce a real image […]

   1966, Electronic Design, volume 14, numbers 14-17, page 18

   Of course, it is impossible to show what a holograph is really like in a two dimensional picture such as this.

   1983, Ellen Nevins, Encyclopedia of Computers and Electronics, page 108

present singular third person holographs · participle present holographing · participle past holographed · past holographed

1. To record by means of holography.

1. not comparableHandwritten by the person whose signature it bears.

   The will was holograph, for Mr. Utterson, though he took charge of it now that it was made, had refused to lend the least assistance in the making of it;

   1886, Robert Louis Stevenson, Strange Case of Dr Jekyll and Mr Hyde