[ dahy-kroh-iz-uh m ]
/ ˈdaɪ kroʊˌɪz əm /


Crystallography. pleochroism of a uniaxial crystal such that it exhibits two different colors when viewed from two different directions under transmitted light.
Chemistry. the exhibition of essentially different colors by certain solutions in different degrees of dilution or concentration.

Origin of dichroism

1810–20; < Greek díchro(os) (see dichroic) + -ism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for dichroism

British Dictionary definitions for dichroism


/ (ˈdaɪkrəʊˌɪzəm) /


Also called: dichromaticism a property of a uniaxial crystal, such as tourmaline, of showing a perceptible difference in colour when viewed along two different axes in transmitted white lightSee also pleochroism
a property of certain solutions as a result of which the wavelength (colour) of the light transmitted depends on the concentration of the solution and the length of the path of the light within the solution
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

Medicine definitions for dichroism


[ dīkrō-ĭz′əm ]


The property of some solutions of showing different colors at different concentrations.
The property of some crystals of exhibiting two different colors when viewed along different axes.
Related formsdi•chroic adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.