Pleochroism

ahd-5
  • noun. The property possessed by some crystals of exhibiting different colors, especially three different colors, when viewed along different axes.
    • The Century Dictionary and Cyclopedia
  • noun. In crystallography, the variation in color observed in some crystals when viewed in different directions, due to the fact that the rays having vibrations in different planes suffer absorption in different degrees.
    • the GNU version of the Collaborative International Dictionary of English
  • noun. The property possessed by some crystals, of showing different colors when viewed in the direction of different axes.
    • Wiktionary, Creative Commons Attribution/Share-Alike License
  • noun. The optical phenomenon in some colored, transparent crystals (such as tourmaline) in which the color is different in different directions.
    • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • noun. the phenomenon of different colors appearing when certain crystals are viewed from different directions
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