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siderography

[sid-uh-rog-ruh-fee]
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noun
  1. the art or technique of engraving on steel.
  2. a method of increasing the number of reproductions obtained from a steel engraving by first rolling a soft-steel cylinder over a hardened steel plate and then rolling the hardened cylinder over a soft-steel plate.
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Origin of siderography

First recorded in 1810–20; sidero-1 + -graphy
Related formssid·er·og·ra·pher, nounsid·er·o·graph·ic [sid-er-uh-graf-ik] /ˌsɪd ər əˈgræf ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018