%ochroma%

a. [ Pref. apo- + chromatic. ] (Optics) Free from chromatic and spherical aberration; -- said esp. of a lens in which rays of three or more colors are brought to the same focus, the degree of achromatism thus obtained being more complete than where two rays only are thus focused, as in the ordinary achromatic objective. -- Ap`o*chro"ma*tism n. [Webster 1913 Suppl.]

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 ]

n. See Lithochromics. [ 1913 Webster ]

a. [ Cf. F. monochromatique. See Monochrome. ] Consisting of one color, or presenting rays of light of one color only. [ 1913 Webster ]

Monochromatic lamp (Opt.), a lamp whose flame yields rays of some one homogenous light. It is of great importance in optical experiments. [ 1913 Webster ]

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

a. Pleochroic. [ 1913 Webster ]