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A material that can appear two different colors. This is a broad term that covers color variations dependent on any of the following physical conditions: 1) illumination direction (dichroism), 2) illumination wavelength, 3) concentration or thickness of the material, 4) temperature (liquid crystals), 5) physical orientation (suede effect), or 6) chemical environment (pH indicators).

Synonyms and Related Terms

dichromatisme (Fr.);