duochromes

Noun

duochrome (plural duochromes)

1. The duochrome test, a test used by opticians to refine the correction of refractive error, in which the subject is asked to compare images presented with red and green backgrounds.
   • When using the duochrome, there may not be an exact endpoint because the chances of the spectacle refraction falling into a 0.25 DS endpoint are fairly remote.2007, Andrew William Keirl, Caroline Christie, Clinical Optics and Refraction, page 108
2. An image composed of varying shades (grayscale) of two colors.
   • Where a color original such as a transparency, color print, or color artwork is furnished, additional impact and interest can be obtained with the duochrome.1967, The American Pressman - Volume 77, page 24
3. A piece of pottery decorated in two colors.
   • Jugs 9-10 and 15 are obviously the last vestiges of earlier duochrome ware.1931, Studies in Ancient Oriental Civilization - Issues 13-17, page 8
4. A color scheme consisting of only two hues.
   • All was immaculately in keeping, a duochrome of terracotta and brick, with niches for Elizabeth II matching those of her great-great grandparents, Victoria and Albert, on the North Porch.2010, Roger Williams, The Royal Albert Hall: A Masterpiece for the 21st Century
5. Fabric that shifts between two colors, depending on the angle of light, also, by extension, something made with such fabric.
   • So she'd worn one of her own creations, a duochrome that shifted from turquoise to a rich blue depending on how the light hit it.2016, Opal Carew, Meat
6. A fluorochrome that shows up in either of two colors, depending on the type of biological material it stains.
   • […] which seem to be positive for two fluorochromes, i.e., the intact duochrome and the first component of the disintegrated duochrome.1997, Ivan Lefkovits, Immunology Methods Manual, page 1851

See all 9 meanings of duochrome