wind shear(redirected from Wind sheer)
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A significant variation in the speed or velocity of the wind with respect to location or altitude, as in the speed change of a downdraft, or in the directional change of lateral winds along the edge of a thunderstorm.
(Aeronautics) stress on an aircraft in an area in which winds of different speeds and directions are close together
1. the rate at which wind velocity changes from point to point in a given direction.
2. a condition, dangerous to aircraft, in which the speed or direction of the wind changes abruptly.
A change of wind direction and magnitude.