'Isochromatic' definitions:

Definition of 'Isochromatic'

From: GCIDE

Isochromatic \I`so*chro*mat"ic\, a. [Iso- + chromatic.] (Opt.) Having the same color; connecting parts having the same color, as lines drawn through certain points in experiments on the chromatic effects of polarized light in crystals. [1913 Webster]