The Collaborative International Dictionary of English v.0.48:

Photogravure \Pho`to*grav"ure\, n. [F.]
   A photoengraving; also, the process by which such a picture
   is produced.
   [1913 Webster]

WordNet (r) 3.0 (2006):

photogravure
    n 1: printing from an intaglio plate prepared by photographic
         methods
    2: an intaglio print produced by gravure [syn: gravure,
       photogravure, heliogravure]
    3: using photography to produce a plate for printing [syn:
       photogravure, rotogravure]