duotone

American  

[doo-uh-tohn, dyoo-] / ˈdu əˌtoʊn, ˈdyu- /

adjective

1. of two tones or colors.

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noun

1. a picture in two tones or colors.

2. Printing.

   1. a method of printing an illustration either in a dark and a tinted shade of the same color or in two different colors from two plates of a monochrome original made from negatives at different screen angles.

   2. an illustration printed by this method.

duotone British  

/ ˈdjuːəˌtəʊn /

noun

1. a process for producing halftone illustrations using two shades of a single colour or black and a colour

2. a picture produced by this process

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Etymology

Origin of duotone

First recorded in 1905–10; duo- + tone