meteorological range

An empirically consistant measure of the visual range of a target; a concept developed to eliminate from consideration the threshold contrast and adaptation luminance, both of which vary from observer to observer. Also known as standard visibility; standard visual range.

Related terms:

• visual range
• perigean range
• meteorological tide
• spring range
• neap range
• geographic range
• mean spring range
• mean neap range
• tidal range
• diurnal range