Having the property of showing two different colors when light passes through it at different angles or wavelengths.
From Greek 'dicha' (two) and 'chroma' (color). The '-ic' suffix makes it an adjective describing a material property that was first formally identified in optical science during the 19th century.
Dichroic glass is what makes those fancy stage lights that seem to shift color—and dichroic coatings on high-end camera lenses are key to making professional photos look incredible because they reflect exactly the colors you want.
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