1) Gravure 2) Intaglio 3) Intaglio printing 1) Heliogravure 2) Rotogravure 
Photogravure is an intaglio printmaking or photo-mechanical process whereby a copper plate is coated with a light-sensitive gelatin tissue which had been exposed to a film positive, and then etched, resulting in a high quality intaglio print that can reproduce the detail and continuous tones of a photograph. == History == The earliest forms of pho...
• (n.) A photoengraving; also, the process by which such a picture is produced.
A photographic image produced from an engraving plate, which gives it an art quality of a lithograph. The process was developed in the 1850s but is rarely used today because of the high cost.
A printing process where the image is etched into the plate cylinder. The main advantage of this method of printing is the high speed, long run capability. Used mainly for mail order and magazine work. 
Pho`to·grav'ure noun [ French] A photoengraving; also, the process by which such a picture is produced. 
A process for printing from a photographic negative transferred to a metal plate and etched in
An intaglio printing process in which the image has been placed on the plate by photographic means using carbon tissues. 
[n] - printing from an intaglio plate prepared by photographic methods 2. [n] - using photography to produce a plate for printing
rotogravure noun using photography to produce a plate for printing
Printing process that uses a plate prepared photographically, covered with a pattern of recessed cells in which the ink is held. See gravure