the spatial relation between something and the course along which it points or moves

parallel to or in the plane of the horizon or a base line

at right angles to the plane of the horizon or a base line

at an angle to the horizontal or vertical position

position of aircraft or spacecraft relative to a frame of reference (the horizon or direction of motion)

something that is oriented horizontally

something that is oriented vertically

one of the four major division of the compass

the steepest angle of descent of a tilted bed or feature relative to a horizontal plane, and is given by the number (0°-90°) as well as a letter (N,S,E,W) with rough direction in which the bed is dipping.

parallel to or in the plane of the horizon or a base line

at right angles to the plane of the horizon or a base line

at an angle to the horizontal or vertical position