- representing correctly the relations of colors as found in a subject; isochromatic.
- (of an emulsion) sensitive to all visible colors except red; isochromatic.
Origin of orthochromatic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for orthochromatic
Orthochromatic results exhibited by Dixon and Sons at the photographic exhibition in October.The Evolution of Photography
On the few occasions when orthochromatic plates are used the lamp need not be lighted.Photographs of Nebul and Clusters
James Edward Keeler
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.
- 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
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
- Staining with the same color as that of the dye used. Used of a cell or tissue.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.