pleochroism(redirected from Polychroism)
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Property of showing changes of color when illuminated along different axes, as in certain crystals or liquids.
[pleo- + G. chrōma, color]
Farlex Partner Medical Dictionary © Farlex 2012
pleochroism(plē-ŏk′rō-ĭzm) [″ + ″ + -ismos, condition]
The property of a crystal that produces different colors when light passes through it at different angles.
Medical Dictionary, © 2009 Farlex and Partners
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.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann