| 1. | Also called, especially British, angle of incidence. Aeronautics. the acute angle between the chord of an aircraft wing or other airfoil and the direction of the relative wind. |
| 2. | Railroads. the angular attitude of a wheel flange to the rail, esp. on curves. |
| angle of attack n. The acute angle between the chord of an airfoil and a line representing the undisturbed relative airflow. |