siderography (English, noun)
expansion: siderography (uncountable)
Senses:
glosses: A 19th-century process of reproducing steel-engraved designs for printing. The design is engraved on a steel block, then hardened and used to transfer a raised-image version to a steel roller under heavy pressure. The roller is then hardened and used as a die to impress duplicate images on printing plates for transferring to paper by the intaglio method.
tags: historical
uncountable
Forms: