Achromic
Pronunciation : A*chro"mic
Part of Speech : a. [Gr. colorless; priv. + color.]
Definition : Defn: 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.
Source : Webster's Unabridged Dictionary, 1913