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Meaning of siderography

sid•er•og•ra•phy

Pronunciation: (sid"u-rog'ru-fē), [key]
— n.
  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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.