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Related to pleochroic: trichroism


The property possessed by some crystals of exhibiting different colors, especially three different colors, when viewed along different axes.

[pleo- + Greek khrōs, color + -ism.]

ple′o·chro′ic (plē′ə-krō′ĭk) adj.
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Adj.1.pleochroic - of or relating to or having pleochroism
References in periodicals archive ?
Small brown-green, pleochroic grains are hornblendes with variable compositions, and a few small biotite grains appear around some augite rims, but in general the rock is fresh and unaltered.
Kunzite is strongly pleochroic, which means is shows a deeper intensity of colour when viewed from either the top or bottom, rather than from either side and is a hard stone, being a variety of spodumene that takes its colour from manganese.
Amphibole, biotites and feldspar compositions were determined by optical properties, such as relief, pleochroic colors, 2v angle amplitude, birefringence, extinction angles, optic figure and sign; for twinned plagioclase Michel-Levy plagioclase-determination method was used.