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trichroism

[trahy-kroh-iz-uh m] /ˈtraɪ kroʊˌɪz əm/
noun, Crystallography
1.
pleochroism of a biaxial crystal such that it exhibits three different colors when viewed from three different directions under transmitted light.
Origin
1840-1850
1840-50; trichro(ic) + -ism
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for trichroism

trichroism

/ˈtraɪkrəʊˌɪzəm/
noun
1.
a property of biaxial crystals as a result of which they show a perceptible difference in colour when viewed along three different axes See pleochroism
Derived Forms
trichroic, adjective
Word Origin
C19: from Greek trikhroos three-coloured, from tri- + khrōma colour
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
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