aberratio


aberration

 [ab″er-a´shun] 1. deviation from the normal or usual.2. imperfect refraction or focalization of a lens.chromatic aberration unequal refraction by a lens of light rays of different lengths passing through it, producing a blurred image and a display of colors.dioptric aberration (spherical aberration) inability of a spherical lens to bring all rays of light to a single focus.ventricular aberration aberrant ventricular conduction.