The Collaborative International Dictionary of English v.0.48:

Photoglyphic \Pho`to*glyph"ic\, a. [Photo- + Gr. gly`fein to
   engrave.]
   Pertaining to the art of engraving by the action of light.
   [Written also photoglyptic.]
   [1913 Webster]

   Photoglyphic engraving, a process of etching on copper,
      steel, or zinc, by means of the action of light and
      certain chemicals, so that from the plate impressions may
      be taken. --Sir D. Brewster.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Photoglyptic \Pho`to*glyp"tic\, a.
   Same as Photoglyphic.
   [1913 Webster]