Definition
Photoengraving is a process for creating printing plates by using photographic techniques to transfer an image onto a metal plate, which is then etched to create a relief surface. This relief surface can then be inked and used for printing. It's a way to create a physical printing template from a photograph. Think of it as a photographic stencil for printing. Unlike manual engraving, it allows for precise reproduction of complex images. It was a key technology in the development of mass media.