An Etymological Dictionary of Astronomy and Astrophysics
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Same as → apochromatic lens.

Corrected for → spherical aberration at two wavelengths or colors and for → chromatic aberration at three wavelengths.

→ apo-; → chromatic.

A lens that is → apochromatic.

→ apochromatic; → lens.

An optical system that is → apochromatic.

→ apochromatic; → system.

The capacity of an optical system to bring three widely separated wavelengths of light into a single focus.

→ apochromatic; → -ism.

To bring the wavelengths of the spatially separate colors to a common focus.

→ apochromat; → -ize.