Duotone

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Duotone \Du"o*tone\, n. [L. duo two + tone.] (Photoengraving)
     Any picture printed in two shades of the same color, as
     duotypes and duographs are usually printed.
     [Webster 1913 Suppl.]