The Collaborative International Dictionary
Photoglyphic engraving
Photoglyphic \Pho`to*glyph"ic\, a. [Photo- + Gr. ? to engrave.] Pertaining to the art of engraving by the action of light.
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.