aberration

(ab-er-a's hun) i. Wandering away from the normal situation. 2. Atypical development or growth. 3. Slight mental derangement. 4. Unequal deviation of the rays of light in pa ing through a lens, so that the image is blurred (spherical a.) or colored (chromatic a.), owing to a breaking up of. the rays of white light, diop'tric a., spherical a. dist an'tial a., blurring of the image of a distant object. Kewto'nian a., chromatic a.