English dictionary
apochromatic
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Definitions, examples, synonyms and antonyms from WordNet 3.0.
adjective
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Free from chromatic and spherical aberration; -- said esp. of a lens in which rays of three or more colors are brought to the same focus, the degree of achromatism thus obtained being more complete than where two rays only are thus focused, as in the ordinary achromatic objective.
Source: webster1913
adjective satellite
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corrected for both chromatic and spherical aberration
ExamplesAn apochromatic lens.
Source: WordNet 3.0