D defs.my
Entry 1 sense Webster, 1913

Duograph

· Du·o·graph · IPA
01 n. A picture printed from two half-tone plates made with the screen set at different angles, and usually printed in two shades of the same col…
  1. 1.
    A picture printed from two half-tone plates made with the screen set at different angles, and usually printed in two shades of the same color or in black and one tint.(Photo-engraving)