Photovisual Pho`to*vis"u*al, a. (Optics) Of certain achromatic lenses, having the same focus for the actinic and for the brightest of the visual rays. [Webster 1913 Suppl.]

The Collaborative International Dictionary of English. 2000.

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  • photovisual — adjective relating to the magnitude of a star as measured by the size of its image on an isochromatic photographic emulsion …   Wiktionary

  • photovisual — pho·to·visual …   English syllables

  • photovisual — “+ adjective Etymology: phot + visual : having the same focal length for actinic rays and for the brightest of the visual rays used of an achromatic lens …   Useful english dictionary

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