Apochromat
noun
a lens, consisting of three or more elements of different types of gl-ss, that is designed to bring light of three colours to the same focal point, thus reducing its chromatic aberration compare achromat
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- Apochromatic
corrected for spherical aberration at two wavelengths or colors and for at three wavelengths. adjective (of a lens) almost free from spherical and chromatic aberration
- Apochromatic objective
apochromatic objective apochromatic objective ap·o·chro·mat·ic objective (āp’ə-krō-māt’ĭk) n. an objective in which chromatic aberration is corrected for three colors and spherical aberration is corrected for two.
- Apocopated
to shorten by . historical examples the lengthened form ăthov, or its apocopated thov, is generally found at the beginning of an -ssertion. a handbook of the cornish language henry jenner verb (transitive) to omit the final sound or sounds of (a word)
- Apocopation
to shorten by . verb (transitive) to omit the final sound or sounds of (a word)
- Apocope
loss or omission of the last letter, syllable, or part of a word. historical examples for it is easy to show that with regard to syncope, apocope, elision, and slurring they are treated quite in the same way. a history of english versification jakob schipper does not the final ‘y’ of ‘tawny’ suppose an apostrophe […]