Meaning of apochromatic

ap•o•chro•mat•ic

Pronunciation: (ap"u-krō-mat'ik, -ō-kru-), [key]
— adj. Optics.
  1. corrected for spherical aberration at two wavelengths or colors and for chromatic aberration at three wavelengths.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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