photovisual
Relating to the magnitude of a star as measured by the size of its image on an…Relating to the magnitude of a star as measured by the size of its image on an isochromatic photographic emulsion.
Meaning
2 senses(not comparable)Relating to the magnitude of a star as measured by the size of its image on an isochromatic photographic emulsion.
(not comparable)Of certain achromatic lenses, having the same focus for the actinic and for the brightest of the visual rays.