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Definition of apochromatic in English:

apochromatic

adjective

Physics

See apochromat

‘In 1868 he invented the apochromatic lens system for the microscope.’
  • ‘The apochromatic lens, therefore, corrects for chromatic aberration to a greater degree than does an achromatic lens.’
  • ‘I hope the following history of the apochromatic lens designs made by Roland Christen of Astro-Physics is of some interest to the readers.’
  • ‘Digital video doesn't have apochromatic aberration; on film, red, green, and blue do not focus at the same plane, so when you shoot film, green and red are very close together but blue is fairly far out.’

Pronunciation

apochromatic

/ˌapəkrōˈmadik/ /ˌæpəkroʊˈmædɪk/