a. [ Gr. &unr_; colorless; &unr_; priv. + &unr_; 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. [ Webster 1913 Suppl. ]

a. (Chem.) Pertaining to, or obtained from, chromium; -- said of the compounds of chromium in which it has its higher valence. [ 1913 Webster ]

Chromic acid, an acid, H2CrO4, analogous to sulphuric acid, not readily obtained in the free state, but forming well known salts, many of which are colored pigments, as chrome yellow, chrome red, etc. --
Chromic anhydride, a brilliant red crystalline substance, CrO3, regarded as the anhydride of chromic acid. It is one of the most powerful oxidizers known. [ 1913 Webster ]

a. [ Gr. &unr_; two-colored; di- = di`s- twice + &unr_; color. ] Furnishing or giving two colors; -- said of defective vision, in which all the compound colors are resolvable into two elements instead of three. Sir J. Herschel. [ 1913 Webster ]

a. Pertaining to, or produced by, heliochromy. [ 1913 Webster ]

n. [ Litho- + Gr. chrw^ma color. ] The art of printing colored pictures on canvas from oil paintings on stone. [ 1913 Webster ]

a. Made, or done, with a single color; as, a monochromic picture. Called also, monochromatic and monochrome. [ 1913 Webster +PJC ]

a. [ Pref. per- + chromic. ] (Chem.) Pertaining to, or designating, a certain one of the highly oxidized compounds of chromium, which has a deep blue color, and is produced by the action of hydrogen peroxide. [ 1913 Webster ]

{ } a. Of or pertaining to photochromy; produced by photochromy. [ 1913 Webster ]

a. [ Poly- + (sense 1) Gr. &unr_;, or (sense 2) chromic. ] 1. Polychromatic. [ 1913 Webster ]

2. (Chem.) Pertaining to, or designating, any one of several acids (known only in their salts) which contain more than one atom of chromium. [ 1913 Webster ]

a. Pertaining to the art of stereochromy; produced by stereochromy. -- Ste`re*o*chro"mic*al*ly adv. [1913 Webster]

a. [ Pref. tri- + Gr. &unr_; color. ] (Opt.) Of, pertaining to, or consisting of, three colors or color sensations. [ 1913 Webster ]

a. [ Pref. tri- + chromic. ] (Chem.) Containing three atoms of chromium. [ 1913 Webster ]