/ Dictionary / Index A apochromatic: Meaning and Definition of Find definitions for: ap•o•chro•mat•ic Pronunciation: (ap"u-krō-mat'ik, -ō-kru-), [key] — adj. Optics. 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. See also: apochromatic (Thesaurus) apocenter apocopate Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language