English definition of Siderography

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Definition of siderography

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Siderography (n.) 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 The process has been superseded by electrotypy..

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Siderographical :: Siderographical (a.) Of or pertaining to siderography; executed by engraved plates of steel; as, siderographic art; siderographic impressions..

Siderography :: Siderography (n.) 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 The process has been superseded by electrotypy..

Siderographist :: Siderographist (n.) One skilled in siderography.