wind shear

wind shear
noun
: a radical shift in wind speed and direction that occurs over a very short distance

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/wind/
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. Cf. microburst.
[1940-45]

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wind shear noun (meteorology)
1. A sudden change in wind velocity at right angles (horizontally or vertically) to its direction
2. The rate of such change
3. Conditions in which there are sudden changes of wind velocity and direction, constituting a danger to aircraft
• • •
Main Entry: ↑wind

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wind shear,
sudden local change in wind direction and speed: »

The Air Line Pilots Association says it has known for years that wind shear is a factor in many plane crashes (Wall Street Journal).

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[wind]
n. variation in wind velocity occurring along a direction at right angles to the wind's direction and tending to exert a turning force

Useful english dictionary. 2012.

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Look at other dictionaries:

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