orthochromatic

[awr-thuh-kroh-mat-ik, -thoh-kruh-]

adjective Photography.

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

First recorded in 1885–90; ortho- + chromatic

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for orthochromatic

Historical Examples of orthochromatic

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.
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.
Scientific American Supplement, No. 711, August 17, 1889
Various
The isochromatic and orthochromatic plates on the market are corrected, and are the best to use.
The Scrap Book, Volume 1, No. 1
Various

British Dictionary definitions for orthochromatic

orthochromatic

adjective

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

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-măt′ĭk]

adj.

Staining with the same color as that of the dye used. Used of a cell or tissue.