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orthochromatic

[awr-thuh-kroh-mat-ik, -thoh-kruh-]
adjective Photography.
  1. representing correctly the relations of colors as found in a subject; isochromatic.
  2. (of an emulsion) sensitive to all visible colors except red; isochromatic.
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Origin of orthochromatic

First recorded in 1885–90; ortho- + chromatic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for orthochromatic

Historical Examples

  • Orthochromatic results exhibited by Dixon and Sons at the photographic exhibition in October.

    The Evolution of Photography

    John Werge

  • On the few occasions when orthochromatic plates are used the lamp need not be lighted.

  • In actual practice an orthochromatic mixture of frequencies is used to give a black, gray and white picture.

    The Airlords of Han

    Philip Francis Nowlan

  • I will give to a common plate about four seconds, an orthochromatic plate under the same conditions five seconds.

  • The isochromatic and orthochromatic plates on the market are corrected, and are the best to use.


British Dictionary definitions for orthochromatic

orthochromatic

adjective
  1. photog of or relating to an emulsion giving a rendering of relative light intensities of different colours that corresponds approximately to the colour sensitivity of the eye, esp one that is insensitive to red lightSometimes shortened to: ortho Compare panchromatic
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Derived Formsorthochromatism (ˌɔːθəʊˈkrəʊməˌtɪzəm), noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

orthochromatic in Medicine

orthochromatic

(ôr′thə-krō-mătĭk)
adj.
  1. Staining with the same color as that of the dye used. Used of a cell or tissue.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.