What is "achromic"

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.

a. (context science English) Uncoloured; not pigmented; lacking in colour.

adj. having no color [syn: achromous]