| angle of deflection [`aŋ·gǝl ǝv di`flek·shǝn] ELECTRONICS The angle through which the electron beam in a cathode-ray tube is diverted from a straight path. ORDNANCE The horizontal clockwise angle between the axis of the bore of a gun and the line of sighting when a gun is laid for direction. PETROLEUM ENGINEERING In directional drilling with a whipstock or other deflecting tool, the angle at which a well is deflected from the vertical. |