(*) The maximum distance in the direction of takeoff or landing at which the runway, or specified lights or markers delineating it, can be seen from a position above a specified point on its center line at a height corresponding to the average eye level of pilots at touch-down.
RUNWAY VISUAL RANGE
Meaning of RUNWAY VISUAL RANGE in English
DOD English dictionary of military terms. Английский словарь военных терминов DOD. 2012