English dictionary
siderography
/,s/I/d/@/'r/A/gr/@/f/i/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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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 The process has been superseded by <i>electrotypy</i>.
Source: webster1913