pleochroism

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Related to Pleochorism: interference colors

ple·o·chro·ma·tism

(plē'ō-krō'mă-tizm),
Property of showing changes of color when illuminated along different axes, as in certain crystals or liquids.
Synonym(s): pleochroism
[pleo- + G. chrōma, color]

pleochroism

(plē-ŏk′rō-ĭzm) [″ + ″ + -ismos, condition]
The property of a crystal that produces different colors when light passes through it at different angles.

pleochroism 

The property of an optically anisotropic medium (e.g. certain crystals) to exhibit different brightness and/or colour when the light transmitted through it is viewed from different directions. (A particular case of pleochroism is dichroism.) Syn. polychroism. See anisotropic; dichroism.
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