'Siderography' definitions:
Definition of 'Siderography'
From: GCIDE
- Siderography \Sid`er*og"ra*phy\, n. [Gr. ??? iron + -graphy.] The art or practice of steel engraving; especially, the process, invented by Perkins, of multiplying facsimiles of an engraved steel plate by first rolling over it, when hardened, a soft steel cylinder, and then rolling the cylinder, when hardened, over a soft steel plate, which thus becomes a facsimile of the original. The process has been superseded by electrotypy. [1913 Webster]