In optics, the correction or elimination of chromatic aberration in lenses or optical systems, allowing different wavelengths of light to focus at the same point.
From Greek 'apo-' (away from, removing) + 'chroma' (color) + '-tism'. A 19th-century optical engineering term describing advanced lens correction technology.
Apochromatism is why modern camera lenses cost thousands—they bend red, green, and blue light to converge at identical points, and even tiny misalignments ruin everything, which is why precision manufacturing matters.
Complete word intelligence in one call. Free tier — 50 lookups/day.