\Pho`to*glyph"ic\, a. [Photo- + Gr. ? to engrave.]
Pertaining to the art of engraving by the action of light.
[Written also {photoglyptic}.]
{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.