visible horizon(n = noun.location) apparent horizon, horizon, sensible horizon, skyline - the line at which the sky and Earth appear to meet; Array
is a kind of line
is a part of linear perspective, perspective

a horizon, apparent horizon, artificial horizon, b horizon, c horizon, celestial horizon, event horizon, geological horizon, gyro horizon, horizon, sensible horizon, soil horizon, visible, visible balance, visible light, visible radiation, visible spectrum, visible speech