1. pertaining to or exhibiting seven colors.
2. having vision for all seven colors of the spectrum.
Being able to see all seven colors of the spectrum; having seven colors (red, orange, yellow, green, blue, indigo, violet).
heptachromic(hĕp″tă-krō′mĭk) [Gr. hepta, seven, + chroma, color]
Possessing normal color vision.