dichromia
- n a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision)
dichromic acid
- n the hypothetical acid (H2Cr2O7) from which dichromates are derived; known only in solution and in the form of dichromate salts
dick fosbury
- n United States athlete who revolutionized the high jump by introducing the Fosbury flop in the 1968 Olympics (born in 1947)