Range

From Citizendium, the Citizens' Compendium

In describing trajectories, range is the distance between a launch point and an object or target. It is also use to characterize the distance at which a weapon is effective, from "point-blank" to intercontinental.

A three-dimensional trajectory can be specified with the combination of range and azimuth. Another aspect of range is elevation angle, which is the equivalent of azimuth angle but relative to the height above ground rather than the compass.