Photovisual definitions

Photovisual

• (a.) Of certain achromatic lenses, having the same focus for the actinic and for the brightest of the visual rays.
Found on http://thinkexist.com/dictionary/meaning/photovisual/

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Photovisual

Pho`to·vis'u·al adjective (Optics) Of certain achromatic lenses, having the same focus for the actinic and for the brightest of the visual rays.
Found on http://www.encyclo.co.uk/webster/P/78

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