1. a form of color blindness in which only two of the three primary colors can be distinguished
Usage: medical
2. the property of having two different colors
Usage: biology

Examples

• Red-green dichromatism is the most common form of color blindness.
• People with dichromatism may have difficulty distinguishing between certain colors.
• The doctor diagnosed him with dichromatism after a series of color vision tests.
• Dichromatism in animals can serve as camouflage or warning coloration.
• The butterfly’s wings showed clear dichromatism with blue and orange patches.
• Scientists study dichromatism to understand how color vision evolved.