1. The quality or condition of having or exhibiting two colors; the state of being dichromatic.
Usage: plural form of dichromatism; technical term used in biology, chemistry, and materials science
2. A form of color blindness in which a person can perceive only two of the three primary colors.
Usage: medical/scientific context; plural form of dichromatism

Examples

• The mineral exhibited several dichromatisms depending on the angle of light exposure.
• Certain dichromatisms in vision are inherited as recessive traits.
• The artist studied the dichromatisms of the fabric under different lighting conditions.
• Red-green color blindness is one of the most common dichromatisms in humans.
• The gemstone's dichromatisms made it appear different colors when viewed from various directions.