Photoglyphic /(?)/

Pho·to·glyph·ic

Photoglyphic

a.
  1. Pertaining to the art of engraving by the action of light.

Phrases & Compounds
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.