NLOS
Used to describe radio transmission across a path that is partially obstructed, usually by a physical object. Many types of radio transmissions depend on line-of-sight between the transmitter and receiver. Obstacles that commonly cause NLOS conditions include buildings, trees, hills, mountains, and, in some cases, high voltage electric power lines. Additionally, Near Line-of-sight radio equipment such as the 5.8 GHz (Sic) radios are less sensitive to path obstructions than higher frequency radios. Signals can be partially blocked or bounced off buildings and rivers with only a slight degradation in service quality.
Similary, it can be called Near Line of Sight where the radio path is partially obstructed