[ap-uh-kroh-mat-ik, -oh-kruh-]
adjective Optics.
corrected for spherical aberration at two wavelengths or colors and for chromatic aberration at three wavelengths.

1885–90; apo- + chromatic

apochromatism [ap-uh-kroh-muh-tiz-uhm] , noun
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World English Dictionary
apochromatic (ˌæpəkrəˈmætɪk)
(of a lens) almost free from spherical and chromatic aberration

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
Apochromatic optics provide exceptionally high contrast and depth perception critical for all clinical and research procedures.
Must have high light transmission apochromatic optics or equivalent.
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