Achromic \A*chro"mic\, a. [Gr. ? colorless; ? priv. + ? color.] Free from color; colorless; as, in Physiol. Chem., the achromic point of a starch solution acted upon by an amylolytic enzyme is the point at which it fails to give any color with iodine.
achromic adj : having no color [syn: {achromous}]