zincographichttp://www.oed.com/dictionary/zincographic_adj%3Ftab%3Dmeaning_and_usezincographic, adj.
First published 1921; not fully revised

zincographicadjective

  1. 1850–
    Pertaining to or produced by zincography.
    Stressed as zincoˈgraphic.
    1. 1850
      [Zinc] is also engraved on (instead of stone) for zincographic printing.
      D. T. Ansted, Elementary Course of Geology §469
    2. 1870
      The..zincographic plate is brought under the roller.
      English Mechanic 14 January 429/3

Originally published as part of the entry for zincography, n.

zincography, n. was first published in 1921; not fully revised.