|apochromat or apochromatic lens (ˌæpəˈkrəʊmæt)|
|Compare achromat a lens, consisting of three or more elements of different types of glass, that is designed to bring light of three colours to the same focal point, thus reducing its chromatic aberration|
|apochromatic lens or apochromatic lens|
|a fool or simpleton; ninny.|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
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