Pronunciation: (dī-krō'mu-tiz"um), [key]
1. the quality or state of being dichromatic.
2. Also called di•chro•ma•top•si•a Pronunciation: (dī-krō"mu-top'sē-u). [key] Ophthalm.a defect of vision in which the retina responds to only two of the three primary colors. Cf. monochromatism (def. 2), trichromatism (def. 3).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.