The Collaborative International Dictionary of English v.0.48:

Photo-engrave \Pho`to-en*grave"\, v. t. [imp. & p. p.
   Photo-engraved; p. pr. & vb. n. Photo-engraving.] [Photo-
   + engrave.]
   To engrave by a photomechanical process; to make a
   photo-engraving of. -- Pho`to-en*grav"er, n.
   [Webster 1913 Suppl.]