Source : Webster's Revised Unabridged Dictionary (1913)

Rhodophane \Rho"do*phane\, n. [Gr. "ro`don the rose + ??? to
   show.] (Physiol.)
   The red pigment contained in the inner segments of the cones
   of the retina in animals. See {Chromophane}. --W. K["U]hne.