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apochromatic

[ap-uh-kroh-mat-ik, -oh-kruh-] /ˌæp ə kroʊˈmæt ɪk, -oʊ krə-/
adjective, Optics.
1.
corrected for spherical aberration at two wavelengths or colors and for chromatic aberration at three wavelengths.
Origin
1885-1890
1885-90; apo- + chromatic
Related forms
apochromatism
[ap-uh-kroh-muh-tiz-uh m] /ˌæp əˈkroʊ məˌtɪz əm/ (Show IPA),
noun
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for apochromatism

apochromatic

/ˌæpəkrəˈmætɪk/
adjective
1.
(of a lens) almost free from spherical and chromatic aberration
Derived Forms
apochromatism (ˌæpəˈkrəʊməˌtɪzəm) noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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