the angular separation between two objects as perceived by an observer

the angular separation between two objects as perceived by an observer

The letter l, a railway that is powered by electricity and that runs on a track that is raised above the street level, angular distance above the horizon (especially of a celestial object)

Angular distance measured west or east of the prime meridian, certain stars whose position is known, and the data in regard to which are used in observations for finding the longitude, as by lunar distances, Length; measure along the longest line