Definitions
from the GNU version of the Collaborative International Dictionary of English.
- noun (Photo-engraving) 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.
Etymologies
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Examples
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Beautiful results are obtained in two colors by the "duograph" or "duotone" processes, the plates being made for two printings.
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